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, -21, -49, -34], [-43, 36, -39], [8, 38, 50, 46, 4], [29, -22, 30, -33], [-42, 26, -38, -35, -19]]