For one throw, the expected value is:

`{: (E(X)=sum{x_i*P(x_i)}), (=1times1/6+2times1/6+3times1/6+4times1/6+5times1/6+6times1/6), (=7/2), (=3.5) :}`

So for 100 throws, I can expect to get $350.