Hi! I'm happy to help!
To make this equation easier, we can use the inverse operation, multiplication (instead of division).
p÷5=3
3×5=p
Doing this will give you the same answer, it just makes it easier. 3 times 5 is 15, so p=15
We can double check our answer by putting in 15 for p.
p÷5=3
15÷5=3, this is true, so our answer is correct.
I hope this was helpful, keep learning! :D