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.
[30.258, -2.341, 80.373, -57.714, 76.333, -92.888, -10.629, 12.743, 228.419, 156.8]