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: [[19, 35], [49, 17, -1, 9], [-9, -15, 45]]

[665, -7497, 6075]