(4.5×1.1×4.8)÷(3.3×0.8×0.5) 12.5×2.5×0.8×4. 6.3×+3.7÷
7÷(7﹣7×0÷7+7÷7) 18×45×(+
) 2.25×
﹣2.75×
+3×225%
(4.5×1.1×4.8)÷(3.3×0.8×0.5) 12.5×2.5×0.8×4. 6.3×+3.7÷
7÷(7﹣7×0÷7+7÷7) 18×45×(+
) 2.25×
﹣2.75×
+3×225%