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.
[[-42, 36], [-1, 23, 35, 13], [-13, -32, 20, 48], [-15, -28, -38, -21, -22], [0, -1, -20, 9, -31], [49, 1, 10, 32], [-10, -8, 19, -18]]