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: [[-10, 30, 20, 2, -15], [5, 2, 17, 18]]

[180000, 3060]