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.
[-67.248, 137.184, -88.935, -28.979, 82.198, 26.333, 205.486, -73.828, 45.102, -57.733]