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: [[-23, 46, 36, -31], [23, -41, 45], [-10, -7], [14, -33, -15], [-49, -2]]

[1180728, -42435, 70, 6930, 98]