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.
[[-18, -6, -35, 0, -28], [-26, 29], [-16, -37, 22, -34], [13, -21, 3]]