numerical approximation of sums

Dear Matlab friends,

I have a question regarding the numerical approximation of sums. I have the following specification (the sum over an exponential function) of which I would like to have a numerical solution:

syms q 
z = symsum((exp(-(0.01*(q+1)/200).^(2)))*q*0.0001, q, 0, 1000000)

However, when I run the command, matlab returns:

sum(q*exp(-(q/20000 + 1/20000)^2), q == 0..1000000)/10000

Also, when I turn to the MuPad environment, I do not manage to obtain a numerical solution (it does return an unresolved solution though). Is there any other way (apart from a loop) via which I could obtain an approximate or exact solution?

Best regards, B.