.. Convert the following formula from infix to postfix (Reverse Polish Notation):

( A + B * C) / ( D + E * F)

(A+B*C)(D+E*F)/

(A+BC*)(D+EF*)/

ABC*+DEF*+/

For Problem 4, write code that performs the computation used in problem 3b

( A + B * C) / ( D + E * F)

for using CPUs that have the following instruction formats:

4 a. Three-operand instructions

You may only use registers A through F, plus X and T.

Registers A through F may not be changed, i.e. their values are fixed.

Register T may be used as a temporary register, and Register X must contain the final answer.

4 b. Stack instructions