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Convert the following formula from infix to postfix (Reverse Polish Notation) (A + B*C)/(D + E*F) 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: 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. Stack instructions