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: [[4, -14, 32, 10], [50, -48, -20, -4, -31], [-42, -13, 45, 19, 37], [-36, -49, -30, 1]]

[-17920, 5952000, 17272710, -52920]