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.
[[42, 20], [50, 23, -10, -41], [15, 2, -13, -18, 26], [-7, -43, 36], [29, -7, 48, -42, -37], [-47, -37, -28], [14, -19, -19, -21]]