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: [[-39, 1, 29, 26, -10], [10, 4], [25, 38, 21, -42]]

[294060, 40, -837900]