This problem requires both clear thinking and the use of prime factors. It does not require much knowledge of volume and capacity.

What are the factors of $595$?

What is its most obvious factor?

Why not try dividing by $5$?

What are the factors of the result of doing this?

Why not call the "numbers" g, o and v?

Does the problem ask which number is which?

Learners could go on to Stars for more work on factors.

Suggest doing Three Spinners which is a simpler problem involving factors.