Question

$$4sss(5); -2\cdot7\ 98(5)$$

Answer

4*s*s*s*5;-7980

Solution


Simplify  \(2\times 798\)  to  \(1596\).
\[\begin{aligned}&4sss\times 5\\&-1596\times 5\end{aligned}\]
Simplify  \(1596\times 5\)  to  \(7980\).
\[\begin{aligned}&4sss\times 5\\&-7980\end{aligned}\]