Question: How to put you answer in decimal form in Maple

I'm given this equation:

f := proc (x) options operator, arrow; x^5-51*x^4+939*x^3-7685*x^2+28800*x-40500 end proc

and I have to find the decimall value of 

f(ln(3*Pi)+8*e^4+sqrt(8+sin(4)))

How do you program this in Maple?

Please Wait...