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, 43], [31, 49], [0, 36, -46, -17, -23], [-8, -10, -9, 1], [-42, -1, 41]]

[-903, 1519, 0, -720, 1722]