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.
[[-26, -48, 24, -2, 42], [31, 5, 43, -40], [29, 40, 26, 23], [-10, -7, 48]]