How can you check the answer to a decimal multiplication problem

Well, when you get the answer to a multiplication problem, you divide your answer to check it, so just do that with the decimals that you multiplied.

For Example:

2 x 3 = 6

6 is your answer, so, do this problem to check it:

6 / 3 = 2

I think you can try and find a even number and divide it by that