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

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

PROBLEM: [4, 16]

SOLUTION: [8, 32]

PROBLEM: [-42, -20, -83, 71, 79, -100]

SOLUTION:
[126, 60, 249, 142, 158, 300]