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.

[189.848, -83.154, -84.802, 18.047, 134.893, 84.873, 68.778]
[ 0.578 -0.253 -0.258  0.055  0.411  0.258  0.209]