Arithmetic Operations using Structured Text- IEC-61131-3

//structured Text Variable Declaration

x:REAL:=150;
y:REAL:=10;
a:REAL;
b:REAL;
c:REAL;
d:REAL;

//Sructured Text Arithmetic Example

a := x + y ;
b := x - y ;
c := x * y ;
d := x / y ;