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: [1, 2, 3]
Example output: [0.167, 0.333, 0.500]
Example explanation: The output list sums to 1.0 and has the same weight as the input 0.333 is twice as large as 0.167, .5 is 3 times as large as 0.167, and 0.5 is 1.5 times as large as 0.333. This is a good example.
Q: [120.991, 18.38, 58.103, -31.104, -66.436, 114.43, -62.283, 165.442, 207.226]
A:
[ 0.231  0.035  0.111 -0.059 -0.127  0.218 -0.119  0.315  0.395]