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: [[-42, -23], [3, -45, 7, -10], [-11, -14, -38], [-3, -18, -49, 17], [-21, 43, -39, -26]]

[966, 9450, -5852, -44982, -915642]