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.
[[45, -40, -2], [-5, -28, -13, 42, 28], [22, -13, -47, -23, -37], [-49, 19, 30, 4, 32]]