90 c + 62/9 , when c = 37
so evalueate90c+62/990c means 90 times cif c=37 then subsiutte90 times 37+62/93330+62/962/9=6 and 8/93330+6 and 8/96 and 8/9=6+8/93330+6+8/93336 and 8/9