When an EBNF including repetition operator $($like $\{\})$ is used to define the syntax

of a language, it is not clear how the syntax tree is constructed for a given sentence.

In class, an informal method to construct syntax trees using any EBNF has been discussed.

For the input expression, id $$ id $*$ id $$ id $+$ id $/$ id$,$ show the step$-$by$-$step derivations using

G$5$ by this informal method and draw the corresponding syntax tree.