Integer result = 7 + 3; //  Evaluates to 10
Integer totalr = result;

Object: Integer error: did not understand #monthlyPhoneBill
MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254)
Integer class(Object)>>doesNotUnderstand: #monthlyPhoneBill (SysExcept.st:1448)
UndefinedObject>>executeStatements (prog:1)
Object: nil error: did not understand #Integer
MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254)
UndefinedObject(Object)>>doesNotUnderstand: #Integer (SysExcept.st:1448)
UndefinedObject>>executeStatements (prog:3)

./prog:3: parse error, expected identifier or binary operator or keyword