Question

How can you use subtraction to describe division?

Answer 1

division can be seen as a repeated subtraction

Answer 2

Example:
\[\left.\begin{matrix}
20-4=16\\
16-4=12\\
12-4=8\\
8-4=4\\
4-4=0
\end{matrix}\right\}5\text{ rounds of subtraction of }4~~\implies~~\frac{20}{4}=5\]