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.

[18, -90, 13, -36, -11, -54, -49, 78, -84]
[36, 270, 26, 108, 33, 162, 147, 156, 252]

[-21, 61, -57, 55, 74, -7]
[63, 122, 171, 110, 148, 21]

[-57, 43]

[171, 86]