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.
Q: [216.424, 156.654, -71.054, 170.474, 47.55, -14.294, -42.849]
A: 
[ 0.468  0.338 -0.153  0.368  0.103 -0.031 -0.093]