When multiplied together, .160 and 5.65 equal 0.904.
With this answer, you can then round is necessary to 1, .9, .90, or just leave it as is. However, if they want you to round, once you have 0.904, I would say either .9 or 1. If not, just leave it as 0.904 without any changes.
I hope this helps! :)