\"\"

\

The expression is \"\"

\

\"\"               (Substitute \"\")

\

\"\"                    (Multiply: \"\")  

\

\"\"                         (Multiply: \"\")\"\"

\

\"\"                                   (Add: \"\")

\

\"\"                                        (Multiply: \"\")    \"\"

\

\"\"                                            (Multiply: \"\")

\

\"\"                                                  (Subtract: \"\")         \"\"     

\

The  value of expression is  \"\"