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.
[[36, -19, -14], [-42, 33, -23], [-46, 7, 40, -49], [18, -48, 47]]