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.

[142.602, -85.052, -26.952, -53.821, -84.404, -83.331, 123.461, 237.491, 240.635]
[ 0.347 -0.207 -0.066 -0.131 -0.206 -0.203  0.301  0.578  0.586]