Definition: In this task you will be given a list of integers. For every element in the list, if the element is positive you should multiply it by 2.  If the element is negative you should multiply it by -3. The output should be a list of integers that is the result of applying that logic to the input list.
 Note: A list is presented with comma separated numbers inside two brackets.
Input: [84, 84, -79, 23, 36, -52, -56, 17, 6, -8, -21]

[168, 168, 237, 46, 72, 156, 168, 34, 12, 24, 63]