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.
[[-30, -28, -1], [-49, -45, -4], [-31, 3, -25], [22, 41, -31, -45, 29]]