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: [[-45, 12], [-3, -31, 15, -27], [-20, 37]]

[-540, -37665, -740]