Semiconductor Physics - Density of States Calculation Problem?

1. Sep 20, 2012

1. The problem statement, all variables and given/known data

Determine the total number of energy states in silicon from the edge of the conduction band to Ec + kT for T = 300K.

2. Relevant equations

N = $\int$g(E)dE

3. The attempt at a solution

I'm pretty sure I know how to do this one. The only problem is, when I get to the step where I have to plug in numbers (i.e. the equation becomes N = (2/3)(4$\pi$(2mn*)(3/2)*(kT)(3/2))/h3), I cannot calculate it!

Reason: Obviously Planck's Constant cubed is an INCREDIBLY small number, and my calculator takes exception, just rounding to 0. There must be a way around it, or a rearrangement that helps, but I don't know what to do. Any advice? Sorry if my equation is formatted a little strangely.

2. Sep 20, 2012