3.75*4.23*36-125*0.423*2.8 怎么简算

3.75×4.23×36-125×0.423×2.8=0.423×（3.75×10×36-125×2.8）=0.423×[（3.75×4）X（10×9）-（125×4）X0.7）]=0.423×（15×90-500×0.7）=0.423×（1350-350）=0.423×1000=423

1: (3 + 1 + 2) × 4
2: ((3 + 1) + 2) × 4
3: (3 + (1 + 2)) × 4
4: (3 + 1) × (2 + 4)
5: 3 × 1 × 2 × 4
6: (3 × 1) × 2 × 4
7: (3 × 1 × 2) × 4
8: ((3 × 1) × 2) × 4
9: (3 × (1 × 2)) × 4
10: 3 × (1 × 2) × 4
11: 3 × (1 × 2 × 4)
12: 3 × ((1 × 2) × 4)
13: 3 × (1 × (2 × 4))
14: 3 × 1 ×(2 × 4)
15: (3 × 1) × (2 × 4)
16: 3 ÷ 1 × 2 × 4
17: (3 ÷ 1) × 2 × 4
18: (3 ÷ 1 × 2) × 4
19: ((3 ÷ 1) × 2) × 4
20: 3 ÷ 1 ×(2 × 4)
21: (3 ÷ 1) × (2 × 4)
22: (3 ÷ (1 ÷ 2)) × 4
23: 3 ÷ (1 ÷ 2) × 4
24: 3 ÷ (1 ÷ (2 × 4))
25: 3 ÷ (1 ÷ 2 ÷ 4)
26: 3 ÷ ((1 ÷ 2) ÷ 4)
27: (3 + 1) × (4 + 2)
28: 3 × 1 × 4 × 2
29: (3 × 1) × 4 × 2
30: (3 × 1 × 4) × 2
31: ((3 × 1) × 4) × 2
32: (3 × (1 × 4)) × 2
33: 3 × (1 × 4) × 2
34: 3 × (1 × 4 × 2)
35: 3 × ((1 × 4) × 2)
36: 3 × (1 × (4 × 2))
37: 3 × 1 ×(4 × 2)
38: (3 × 1) × (4 × 2)
39: 3 ÷ 1 × 4 × 2
40: (3 ÷ 1) × 4 × 2
41: (3 ÷ 1 × 4) × 2
42: ((3 ÷ 1) × 4) × 2
43: 3 ÷ 1 ×(4 × 2)
44: (3 ÷ 1) × (4 × 2)
45: (3 ÷ (1 ÷ 4)) × 2
46: 3 ÷ (1 ÷ 4) × 2
47: 3 ÷ (1 ÷ (4 × 2))
48: 3 ÷ (1 ÷ 4 ÷ 2)
49: 3 ÷ ((1 ÷ 4) ÷ 2)
50: (3 + 2 + 1) × 4
51: ((3 + 2) + 1) × 4
52: (3 + (2 + 1)) × 4
53: 3 × 2 × 1 × 4
54: (3 × 2) × 1 × 4
55: (3 × 2 × 1) × 4
56: ((3 × 2) × 1) × 4
57: (3 × (2 × 1)) × 4
58: 3 × (2 × 1) × 4
59: 3 × (2 × 1 × 4)
60: 3 × ((2 × 1) × 4)
61: 3 × (2 × (1 × 4))
62: 3 × 2 ×(1 × 4)
63: (3 × 2) × (1 × 4)
64: 3 × 2 ÷ 1 × 4
65: (3 × 2) ÷ 1 × 4
66: (3 × 2 ÷ 1) × 4
67: ((3 × 2) ÷ 1) × 4
68: (3 × (2 ÷ 1)) × 4
69: 3 × (2 ÷ 1) × 4
70: 3 × (2 ÷ 1 × 4)
71: 3 × ((2 ÷ 1) × 4)
72: 3 × (2 ÷ (1 ÷ 4))
73: 3 × 2 ÷(1 ÷ 4)
74: (3 × 2) ÷ (1 ÷ 4)
75: 3 × 2 × 4 × 1
76: (3 × 2) × 4 × 1
77: (3 × 2 × 4) × 1
78: ((3 × 2) × 4) × 1
79: (3 × (2 × 4)) × 1
80: 3 × (2 × 4