Answer
72.8
Work Step by Step
Following the order of operation rules, first complete the multiplication, the subtract the products. The numerator and denominator are treated as if they are in parentheses, so division is the final operation.
$\frac{(16.5)(1.95)(12.4)+(6.3)(0.75)}{(125)(0.05)-(0.15)(4.7)}=\frac{398.97+4.725}{6.25-0.705}=\frac{403.695}{5.545}=72.\underset\uparrow8034265104$
The digit to the right of the 3rd significant digit is less than 5, so round down.
