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: [226.341, 48.673, 137.819]
Example Output: [0.548 0.118 0.334]

Example Input: [71.224, 248.241, 139.206]
Example Output: [0.155 0.541 0.303]

Example Input: [166.872, 116.074, 10.468, 9.401, 70.309, 181.4, -89.561]
Example Output:
[ 0.359  0.25   0.023  0.02   0.151  0.39  -0.193]