Definition: 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.
Input: [[-49, 48, -26, -3], [-15, -50, -43, -1], [-19, 18, 48, 40, 6]]

[-183456, 32250, -3939840]