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, 8, -74, 24, -33]

SOLUTION: [156, 16, 222, 48, 99]

PROBLEM: [18, -90, 13, -36, -11, -54, -49, 78, -84]

SOLUTION: [36, 270, 26, 108, 33, 162, 147, 156, 252]

PROBLEM: [57, -91, 14]

SOLUTION:
[114, 273, 28]