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.
[-79.133, -97.324, 28.129, 138.128, 213.878, -42.159, -44.342, 218.167, 206.665, 115.285]