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.
[[30, -10, 37, 18, -47], [28, -3, -11], [12, -10, 42], [38, 9, 36], [-15, -37, -42, -35]]