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: [1, 2, 3]
Example solution: [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.

Problem: [247.612, 36.118, 223.902, 170.029, 158.51, 118.138, -65.585, -53.814, 21.278]

Solution: [ 0.289  0.042  0.262  0.199  0.185  0.138 -0.077 -0.063  0.025]