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.
[[-28, 46, -20, -36, 28], [18, -5, -14, -22, -23], [29, 44, -47, -44, 1], [-17, -42, 34, -15], [2, -10], [-21, -1, 12]]