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: [[-8, -38, 27], [13, 32, 34, 42], [-43, 44, -15, 49], [-5, -15]]

[8208, 594048, 1390620, 75]