$(15$ points$)$ Determine the fraction $(\%)$ of thermal radiation emitted within the visible spectrum wavelengths from $0\mathrm{.}38$m $($violet$)$ to $0\mathrm{.}75$mu$*$m $($red$)$ for a black body at a surface temperature $($a$)5800$ K$,($b$)2000$ K$,($c$)300.10$ deg