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.

Example Input: [173.836, 203.808, 146.954]
Example Output: [0.331 0.389 0.28 ]

Example Input: [-20.728, 47.8, -7.813]
Example Output: [-1.076  2.482 -0.406]

Example Input: [225.535, 189.513, -37.607, 217.481, 153.109, 231.597, 228.691, -97.988, 46.602]
Example Output:
[ 0.195  0.164 -0.033  0.188  0.132  0.2    0.198 -0.085  0.04 ]