Definition: 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.
Input: [[40, -19], [-49, -46, -45, -33, 9], [-30, 31, 33, 29, 40]]

[-760, 30124710, -35600400]