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.
[[-12, 16, -33, -39, -45], [-40, -7], [-13, 19, -1, -21], [37, -46, 14, -7]]