Assume that we have a machine that uses a stack based ISA, including the

instructions PUSH, POP, MULT, ADD, SUB, and DIV. Write the code for the

expression Q $=$ X $+$ Y$/($Z $-$ B$)+$ D

b$.$ Assume that we have a three address ISA, with the registers R$1,$ R$2,$ R$3,$ R$4,$

etc. How would you write this same expression? The code should be written

using standard precedence, left$/$right processing order, and without re$-$using

any temporary registers during the calculation. In other words, the first

intermediate result should be assigned to R$1,$ the next intermediate result to

R$2,$ etc. The final result should be stored