用喜欢的方法计算下面各题.3.7+3.7×9 8.8×12.55.4÷1.25÷8 3.59×0.64+0.36×3.59.
=
1990×2.8+199×51+1.99×2100.
524﹣(124﹣87)
94×56.87+94×43.48+6×100.35.
计算(能简算的要简算) 12.5×8×4×0.25.