33.33×(3×77.78+66.66)=99.99×(77.78+22.22)=99.99×100=9999
(33.33×3)×77.78+33.33×(22.22×3)=(33.33×3)×(77.78+22.22)=99.99×100=9999
99.99×77.78+22.22=....
99.99*77.78+33.33*66.66=99.99*77.78+99.99*22.22=99.99*(77.78+22.22)=99.99*100=9999