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.
[[-47, 39], [19, -21, 28, 12, 10], [23, -26, -21, -47], [23, 49, -36]]