Assume for arithmetic, load$/$store$,$ and branch instructions, a processor has CPIs of $1,12,$ and $5,$ respectively. Also assume that on a single processor a program requires the execution of $2\mathrm{.}56$E$9$ arithmetic instructions, $1\mathrm{.}28$E$9$ load$/$store instructions, and $256$ million branch instructions. Assume that each processor has a $2$ GHz clock frequency.