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: [[-48, 15], [-15, -20, 4, -11], [-18, -19, -42, 38], [-26, 1, 27, 14, -12]]

[-720, -13200, -545832, 117936]