In this task, you will be given a list of numbers. The goal is to divide all the numbers in the list by a constant such that the sum of the resulting list is 1. The output should be rounded to 3 decimals.
Q: [155.53, -27.581, 63.911, -64.652, 76.314, 166.939, -79.394, 216.867, -88.269]
A: 
[ 0.371 -0.066  0.152 -0.154  0.182  0.398 -0.189  0.517 -0.21 ]