a := 20; b := 3; b := a div b + b; c := a mod b + a;
a := 26; b := 6; c := a mod b + b;
a := 20; b := 3; c := a div b + a;
a := 28; b := 7; b := a div b; c := a div b;
a := 26; b := 6; b := a mod b + 4; c := a mod b + 1;
a := 28; b := 7; b := a div b; c := a mod (b + 1);
a := 24; b := 5; b := a mod b; c := a div (b + 1);