Recursive descent parser Expression grammar

Grammar: Grammar used: 
  Production             Predict
EL --> Ex EL          ( INT
    |                 EOF
Ex --> E =            ( INT
E --> T E'            ( INT
E' --> + T E'         +
    |  - T E'         -
    |                 = )
T --> F T'            ( INT
T' --> * F T'         *
    |  / F T'         /
    |                 = ) + -
F --> ( E )           (
    | INT             INT
Version 1: parsing Expressions Version 2: Computing the value of the Expressions