Math quiz problem

[TheHykrr]

I am working on a math quiz app. But I need your help. It is all fine but there are some rules. When the program randomly pick the division , result of the division must be integer etc 27/3, 30/6… How can I make that happen ? Thank you for your help.

[ABG]

Work backwards.
Pick two divisor numbers that when multiplied give you an acceptable dividend.

[ABG]

Alternatively, use these value procedures but beware of prime numbers that have no nontrivial factors …
(the two procedures are draggable)

[ABG]

Here are two more value procedures to help you.
Terminology:
A factor of a number is a smaller number that can divide into the number with 0 remainder.
A prime number has only itself and 1 as factors.
A composite number is a number that is not a prime number (has more than 2 factors).