In this task you will be given a list of lists, of numbers. For every inner list, you should multiply every number in that list and put the results in your answer. The output should be a list of numbers with the same length as the number of the lists in the input list.
[[1, 21, -2, 38], [4, 22, -44, 27, -2], [-5, -30, 10], [0, 16], [40, 49, 21], [23, 33, -47, 11], [-42, -14, -42, -4]]