TASK 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.
PROBLEM: [78, -7, -51, -29, 74, 31, 32, 78]

SOLUTION: [156, 21, 153, 87, 148, 62, 64, 156]

PROBLEM: [91, -98, 30, 25, 64, 70]

SOLUTION: [182, 294, 60, 50, 128, 140]

PROBLEM: [57, 33, -20]

SOLUTION:
[114, 66, 60]