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.
[[-45, -48, -21, 44], [43, 48, -36, 50], [35, -31, -14, -28, -30], [-12, 48, -10]]