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: [[21, 31, -3, -1, -2], [-43, 39], [-20, 7, -1, -7, -31], [-8, -23, -22], [-30, 4, 5], [-49, 45], [-16, 20, 36, 49], [50, 15, -9, -24, -20]]

[-3906, -1677, 30380, -4048, -600, -2205, -564480, -3240000]