36.4×27-2.7×16.4        [3.5+(15-9.8)]×1.6 

4×87.6+87.6×7-87.6     4.56×0.37+4.56×0.63+0.456 

3.2×(2.25+2.5×8)      (12.4-2.28÷1.9)×2.25

4.8÷[0.2×(7.5-5.1)]    0.5×[(0.21+6.86)÷0.7] 

4.01+0.99÷(6.8-3.5) (5.5-4.6)×0.8÷0.06 

144÷(0.94+2.26)×2.7 20-6.37÷0.7×1.5

0.25÷0.5+0.8×0.5         1.6×40-12÷0.4 

4.4×5×0.9÷0.03            50×0.2-1.4×5 

2.5-0.25×2.2×4          (3.3-2.9)×(2.5+7.6)

0.25×40-5.4                  2.7÷1.8×0.2