To multiply fractions, you multiply the numerator and denominator of each.
So \({1 \over 2} \times {1 \over 2} = {1 \times 1 \over 2 \times 2} = {1 \over 4}\)
If you want to multiply fractions, you multiply the numerator by numerator and denominator by denominator .
So in this case, you multiply 1 by 1 and 2 by 2. And then you put the numbers back in place. It should look like this. 1/4