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.
[[26, 18, 37, -5], [36, -42], [49, 21], [-43, -12], [16, 41, 1, -7, -7]]