25*56*98*154/33*70*42*280 сократить дробь

25*56*98*154/33*70*42*280=5*56*98*154/33*14*42*280=1*56*7*154/33*1*42*56=1*1*7*154/33*1*42*1=7*154/33*42=1*154/33*6=77/33*3=7/3*3=7/9