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: [[-7, -3, -40, 43, -19], [-16, -26, 3, 49, 23], [50, -34, 48]]

[686280, 1406496, -81600]