18 - (9+2) / (18-361) pemdas

-1/49. If you take (9+2) which is equal to 11. 18-11 is equal to 7 which puts 7 on the top. You then take 18-361 which gives you 343. You then divide the entire thing by 7/7 because both 7 and - 343 are divisable by 7. That gives you - 1/49.

First do 9+2=11, then 18-361=-257, then multiply the two 11*-257=-2827, then subtract 18--2827=2845