$2\mathrm{.}41\mathrm{.}2[5]<1\mathrm{.}6,2\mathrm{.}13>$ Suppose that we find a way to double the performance

of arithmetic instructions. What is the overall speedup of our machine? What if

we find a way to improve the performance of arithmetic instructions by $10$ times? $($show your math and please make sure it I can copied and pasted it$.)$