C++ :

#include<bits/stdc++.h>
using namespace std;
int main()
{
        float a,b,c,s=0;
        a=97;b=98;c=83;
        s=a+b+c;
        cout<<s<<endl;
        cout<<fixed<<setprecision(1)<<s/3;
}

Pascal :

begin
  writeln(97+98+83);
  writeln((97+98+83)/3:0:1);
  
  
end.