How do you multiply fractions with whole numbers?

So, pretend the whole number has a one under it. Then put them side by side and multipy. If it is a improper fraction (ex. 13 over 3) reduce it. OR do this: So, using the same example, 3 goes into 13 four times, with one left over, therefore it is 4 (how many times it goes in) with 1 (left over) over 3 (the number on the bottom stays the same. We learned this in math a few days ago.