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.

[170.997, 168.919, 162.608, -16.388, -81.975, -60.792, -54.261, 236.975, -95.809]
[ 0.397  0.393  0.378 -0.038 -0.191 -0.141 -0.126  0.551 -0.223]