First, you must stress down. Based on your PMs, you seem to be a bit concerned about your success. That is fine, but not if it puts you in paralysis. One sure sign of paralysis is forgetting arithmetic.
(a) Can you REALLY not sum the expenses?
(b) Can you REALLY not calculate 81% of the expenses you just summed?
(c) Do you know what a "Mill Rate" is? Hint: Mills are smaller than percents.
(d) Once you have the Mill Rate, this is a multiplication problem.
Really, these should be easy. If you truly are struggling with these, you are not going to have a fun time in the future. Step up your game by puttin gout your stress.