(8/9+1 과 3/7+6/11)÷(3/11+5/7+4/9)약산

(8/9+1 과 3/7+6/11)÷(3/11+5/7+4/9)약산

【(8*77+10*99+6*81)/9*7*11】÷【(4*77+3*81+5*99)/9*7*11】
=(8*77+10*99+6*81)/(4*77+3*81+5*99)
=2