A cake is divided by removing at each cut one quarter of the cake present before the cut. after three cuts have been made, what is the fraction left of the original cake?

Please explain in detail thank you

each cut results in a cake that is 3/4 of the size before the cut

starting with a whole cake (1)

after 3 cuts
... 1 * (3/4) * (3/4) * (3/4)