问题描述：
400道四混合运算包括小数，整数，分数。
最佳答案： 3/7 × 49/9 - 4/3
8/9 × 15/36 + 1/27
12× 5/6 – 2/9 ×3
8× 5/4 + 1/4
6÷ 3/8 – 3/8 ÷6
4/7 × 5/9 + 3/7 × 5/9
5/2 -( 3/2 + 4/5 )
7/8 + ( 1/8 + 1/9 )
9 × 5/6 + 5/6
3/4 × 8/9 - 1/3
7 × 5/49 + 3/14
6 ×( 1/2 + 2/3 )
8 × 4/5 + 8 × 11/5
31 × 5/6 – 5/6
9/7 - ( 2/7 – 10/21 )
5/9 × 18 – 14 × 2/7
4/5 × 25/16 + 2/3 × 3/4
14 × 8/7 – 5/6 × 12/15
17/32 – 3/4 × 9/24
3 × 2/9 + 1/3
5/7 × 3/25 + 3/7
3/14 × 2/3 + 1/6
1/5 × 2/3 + 5/6
9/22 + 1/11 ÷ 1/2
5/3 × 11/5 + 4/3
45 × 2/3 + 1/3 × 15
7/19 + 12/19 × 5/6
1/4 + 3/4 ÷ 2/3
8/7 × 21/16 + 1/2
101 × 1/5 – 1/5 × 21
50+160÷40
121 - 111 ÷ 37
(136+64)×(65-345÷23)
5.38+7.85-5.37
(121 - 111 ÷ 37)× 5
280 + 650 ÷ 13
1000 -(280 + 650 ÷ 13)
6-1.19×3-0.43
707 - 35 × 20
(120 - 103)× 50
(58+370)÷(64-45)
760 ÷ 10 ÷ 38
12×6÷7.2-6
0.68×1.9+0.32×1.9
420+580-64×21÷28
(95 - 19 × 5 )÷74
45 × 20 × 3
(270 + 180)÷(30 - 15)
2/3÷1/2－1/4×2/5?
2－6/13÷9/26－2/3?
2/9＋1/2÷4/5＋3/8?
10÷5/9＋1/6×4?
1/2×2/5＋9/10÷9/20?
5/9×3/10＋2/7÷2/5?
1/2＋1/4×4/5－1/8?
3/4×5/7×4/3－1/2?
23－8/9×1/27÷1/27?
8×5/6＋2/5÷4?
1/2＋3/4×5/12×4/5?
8/9×3/4－3/8÷3/4?
5/8÷5/4＋3/23÷9/11?
120-144÷18+35?
347+45×2-4160÷52?
（58+37）÷（64-9×5）?
95÷（64-45）?
178-145÷5×6+42?
812-700÷（9+31×11）?
85+14×（14+208÷26）?
（284+16）×（512-8208÷18）?
120-36×4÷18+35?
（58+37）÷（64-9×5）?
(6.8-6.8×0.55)÷8.5?
0.12× 4.8÷0.12×4.8?
（3.2×1.5+2.5）÷1.6?
45.6-1.6÷4
5.38+7.85-5.37
7.2÷0.8-1.2×5
6-1.19×3-0.43
6.5×（4.8-1.2×4）
5.8×（3.87-0.13）+4.2×3.74?
32.52-（6+9.728÷3.2）×2.5?
[（7.1-5.6）×0.9-1.15] ÷2.5?
5.4÷[2.6×（3.7-2.9）+0.62]?
12×6÷（12-7.2）-6?
12×6÷7.2-6?
0.68×1.9+0.32×1.9?
（58+370）÷（64-45）?
420+580-64×21÷28?
（136+64）×（65-345÷23）?
10.15-10.75×0.4-5.7?
125*3+125*5+25*3+25?
9999*3+101*11*(101-92)?
(23/4-3/4)*(3*6+2)?
3/7 × 49/9 - 4/3?
8/9 × 15/36 + 1/27?
12× 5/6 – 2/9 ×3?
8× 5/4 + 1/4?
6÷ 3/8 – 3/8 ÷6?
4/7 × 5/9 + 3/7 × 5/9?
5/2 -（ 3/2 + 4/5 ）?
7/8 + （ 1/8 + 1/9 ）?
9 × 5/6 + 5/6?
3/4 × 8/9 - 1/3?
7 × 5/49 + 3/14?
6 ×（ 1/2 + 2/3 ）?
8 × 4/5 + 8 × 11/5?
31 × 5/6 – 5/6?
9/7 - （ 2/7 – 10/21 ）?
5/9 × 18 – 14 × 2/7?
4/5 × 25/16 + 2/3 × 3/4?
14 × 8/7 – 5/6 × 12/15?
17/32 – 3/4 × 9/24?
3 × 2/9 + 1/3?
5/7 × 3/25 + 3/7?
3/14 ×× 2/3 + 1/6?
1/5 × 2/3 + 5/6?
9/22 + 1/11 ÷ 1/2?
5/3 × 11/5 + 4/3?
45 × 2/3 + 1/3 × 15?
7/19 + 12/19 × 5/6?
1/4 + 3/4 ÷ 2/3?
8/7 × 21/16 + 1/2?
101 × 1/5 – 1/5 × 21?
18.1＋（3－0.299÷0.23）×1?
(6.8-6.8×0.55)÷8.5?
0.12× 4.8÷0.12×4.8?
（3.2×1.5+2.5）÷1.6?
3.2×6+（1.5+2.5）÷1.6?
0.68×1.9+0.32×1.9?
10.15-10.75×0.4-5.7?
5.8×（3.87-0.13）+4.2×3.74?
32.52-（6+9.728÷3.2）×2.5?
[（7.1-5.6）×0.9-1.15] ÷2.5?
5.4÷[2.6×（3.7-2.9）+0.62]?
12×6÷（12-7.2）-6?
12×6÷7.2-6?
75.33.02－（148.4－90.85）÷2.5?
4*3/5+3/4*2/5?
1-1/4+8/9/7/9?
3/24+2/21?
15*3/5?
5/2+3/4?
(2-1/2)]*2/5?
5268.32-2569?
3+456-52*8??
1/3+1/4?
89+456-78?
3/7 × 49/9 - 4/3?
9 × 15/36 + 1/27?
2× 5/6 – 2/9 ×3?
3× 5/4 + 1/4?
94÷ 3/8 – 3/8 ÷6?
95/7 × 5/9 + 3/7 × 5/9?
6/2 -（ 3/2 + 4/5 ）?
8 +（ 1/8 + 1/9 ）?
8 × 5/6 + 5/6?
1/4 × 8/9 - 1/3?
10 × 5/49 + 3/14?
1.5 ×（ 1/2 + 2/3 ）?
2／9 × 4/5 + 8 × 11/5?
3.1 × 5/6 – 5/6?
4/7 - （ 2/7 – 10/21 ）?
19 × 18 – 14 × 2/7?
5 × 25/16 + 2/3 × 3/4?
4 × 8/7 – 5/6 × 12/15?
7/32 – 3/4 × 9/24?
2/3÷1/2－1/4×2/5?
2－6/13÷9/26－2/3?
2/9＋1/2÷4/5＋3/8?
10÷5/9＋1/6×4?
1/2×2/5＋9/10÷9/20?
5/9×3/10＋2/7÷2/5?
1/2＋1/4×4/5－1/8?
3/4×5/7×4/3－1/2?
23－8/9×1/27÷1/27?
8×5/6＋2/5÷4?
1/2＋3/4×5/12×4/5?
8/9×3/4－3/8÷3/4?
5/8÷5/4＋3/23÷9/11?
1.2×2.5+0.8×2.5?
8.9×1.25-0.9×1.25?
12.5×7.4×0.8?
9.9×6.4-（2.5+0.24）
6.5×9.5+6.5×0.5?
0.35×1.6+0.35×3.4?
0.25×8.6×4?
6.72-3.28-1.72?
0.45+6.37+4.55?
5.4+6.9×3-（25-2.5）
2×41846-620-380?
4.8×46+4.8×54?
0.8+0.8×2.5?
1.25×3.6×8×2.5-12.5×2.4?
28×12.5-12.5×20?
23.65-（3.07+3.65）?
（4+0.4×0.25）8×7×1.25?
1.65×99+1.65?
27.85-（7.85+3.4）?
48×1.25+50×1.25×0.2×8?
7.8×9.9+0.78?
(1010+309+4+681+6）×12?
3×9146×782×6×854?
15×7/8+6.1-0.60625?
102×4.5?
7.8×6.9＋2.2×6.9?
5.6×0.25?
8×（20－1.25）?
127+352+73+44?
89+276+135+33?
25+71+75+29 +88?
243+89+111+57?
9405-2940÷28×21?
920-1680÷40÷7?
690+47×52-398?
148+3328÷64-75?
360×24÷32+730?
2100-94+48×54?
51+（2304-2042）×23?
4215+（4361-716）÷81?
（247+18）×27÷25?
36-720÷（360÷18）?
1080÷（63-54）×80?
（528+912）×5-6178?
8528÷41×38-904?
264+318-8280÷69?
（174+209）×26- 9000?
814-（278+322）÷15?
1406+735×9÷45?
3168-7828÷38+504?
796-5040÷（630÷7）?
285+（3000-372）÷36?
1+5/6-19/12?
5.63+8.8+4.37+1.2?
750－(550-300)÷25??
6.38-2.4+5.62?
125×16
2100÷25÷4? ??
25×（40+4）?
55.83-(8.2+5.83)? ?
99×8.5+8.5
（270-30×9）÷5.5??
36×19-19×26??
25×45+75×45??
38×101
5.63+8.8+4.37+1.2??
750－(550-300)÷25??
6.38-2.4+5.62??
125×16
2100÷25÷4? ??
25×（40+4）?
55.83-(8.2+5.83)? ?
99×8.5+8.5
27.5-9.8-0.2??
58+（124-24×3）?
8157-(103+157+597)
3.2×(1.5+2.5)÷1.6
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