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: [[-47, 26, 32, 45, 4], [2, 49, 47, -42, 37]]

[-7038720, -7157724]