Math

Well, you are multiplying -9   180 times. So the result will be even. Unfortunately, you will have to plug this in a calculator, or your hand might fall off from calculating. 

I am a reasonably sensible person (or am I? ), so I used a calculator.

The answer is 5802988355301064263572941269018812264886757498342118039827603956893368389206154994705426429662904979537365662938773593537918329060451697709838267789886857631025156060199201.