Name a number that can be evenly divided by 6 and and by 7

There are an infinite number of them. The smallest one is 42,

and every multiple of 42 is another one.

I don't remember the official correct way to solve this problem.

I can only show you my own way of doing it.

I take the bigger number, and I go through its multiples, one by one,

until I spot one that's also a multiple of the smaller one.

Example: 6 and 7.

Go through the multiples of 7:

7 ... no, not a multiple of 6

14 ... no, not a multiple of 6

21 ... no, not a multiple of 6

28 ... no, not a multiple of 6

35 ... no, not a multiple of 6

42 ... Yes! A multiple of 6. yay!