.6*(10^10) integrate from 160 to 10000 e^(-(x - 83)^2/(2 15^2))/(sqrt(2 π) 15)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.