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: [[9, -3, 40, 50], [29, 28, 22, -2], [-12, -46, -19], [-50, 49, -24], [16, -43, -7, -49], [20, -29, -41, 38, -23], [-28, -48, 42, 7], [-42, -35], [28, 4, -28, -36, 49], [-26, -4, -8, 18]]

[-54000, -35728, -10488, 58800, -235984, -20783720, 395136, 1470, 5531904, -14976]