For an arithmetic expression given with the following EBNF description $($please refer to the

state diagram above for the definitions of int$\_$constant and id terminals$)(20$P$)$

Please write the implementation steps of The Recursive$-$Descent Parsing Process.

Suppose you have written the code of the implementation, what would be the

output for the arithmetic expression given as $"(ab+4)**(c\frac{d}{a})"$