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.
[[-17, -50], [-23, 7], [22, 42, -20, -15], [22, 4], [-26, -42], [-5, -47, 50], [-21, -35, 30, -49], [-11, 49, 48, 10, 12], [-29, -31, -39, -38, -49], [48, 5, -10, -40, -31]]