Determine the number of defective routers.
[tex]\frac{1.2}{100}\cdot10000=120[/tex]Determine the number of non-defective routers.
[tex]10000-120=9880[/tex]For 9880, the profit is $38 per unit and for 120 units loss is $24 per unit.
Determine the expected profit from selling 10000 router.
[tex]\begin{gathered} P=9880\cdot38-24\cdot120 \\ =375440-2880 \\ =372560 \end{gathered}[/tex]So expected profit from selling 10000 routers is $372560.