A = \(\left(\frac{7777}{8585}-\frac{77}{85}+\frac{7777}{16362}-\frac{77}{162}\right)\) . \(\frac{123498766}{987661234}\)
A = \(\left(\frac{7777}{8585}-\frac{7777}{8585}+\frac{7777}{16362}-\frac{7777}{16362}\right)\). \(\frac{123498766}{987661234}\)
A = 0 . \(\frac{123498766}{987661234}\) = 0