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: [[35, -37, -12], [-15, -15, 17], [49, -49], [-21, -26]]

[15540, 3825, -2401, 546]