Given the task definition and input, reply with output. 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.

[-42.205, 153.981, 206.25, -81.446, -38.709, 172.993, -8.281]

[-0.116  0.425  0.569 -0.225 -0.107  0.477 -0.023]