Is this textbook example incorrect?

[kl055]

Homework Statement

Homework Equations

I got 4.5*10^22 /m^3 using the exact numbers that they used...

which gives 4.5*10^16 /cm^3Is there some intermediate step which was not shown? ie. the numerical answer given by the equation is in some other unit which was converted to /m^3?

The Attempt at a Solution

 

[kl055]

wait, I think I made a mistake on my handheld calc

I used this intead and got
https://defuse.ca/big-number-calculator.htm
(8*3.14*((2*9.11*10^31)^1.5)/(3*(6.625*10^-34)^3))*(1.6*10^-19)^1.5
=4.5 325 569 071 841 6e+ 120

 

[kl055]

nevermind, mr Donald neaman forgot a negative sign in front of the ^31...