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: [-90.919, 122.785, 19.698, -85.394, -93.418, 154.188, -2.929, -63.746, 221.142]
Example Output: [-0.501  0.677  0.109 -0.471 -0.515  0.85  -0.016 -0.351  1.219]

Example Input: [246.183, 41.271, 148.968]
Example Output: [0.564 0.095 0.341]

Example Input: [-99.278, -12.538, -37.696, 215.234]
Example Output:
[-1.511 -0.191 -0.574  3.275]