Bài giải:

$\begin{align}  & \frac{\left( \frac{13}{84}\times 1\frac{2}{5}-2\frac{1}{2}\times \frac{7}{180} \right):2\frac{7}{18}+4\frac{1}{2}\times \frac{1}{10}}{70\frac{1}{2}-528:7\frac{1}{2}} \\  & =\frac{\left( \frac{13}{60}-\frac{7}{72} \right):\frac{43}{18}+\frac{9}{20}}{\frac{141}{2}-\frac{352}{5}} \\ \end{align}$

$\begin{align}  & =\frac{\frac{43}{360}:\frac{43}{18}+\frac{9}{20}}{\frac{1}{10}} \\  & =\frac{\frac{1}{20}+\frac{9}{20}}{\frac{1}{10}} \\ \end{align}$

$\begin{align}  & =\frac{\frac{1}{2}}{\frac{1}{10}} \\  & =5 \\ \end{align}$