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.
[[31, 48, -14], [-14, -25, 26, -49, 3], [15, -46, -43, 18], [44, 46]]