5.7×9+5.7
(20-0.4)×2.5
7.4×2.6+2.6×2.6
3.6×(10+0.5)
0.125×(8×5.6)
0.8×3.7×1.25
6.3×1.4-2.8×0.9
0.8×(6.25-1.45)
14.5-1.2×2.5×3
(2.6+1.9)×0.7