99×22+33×34=33×3×22+33×34=33×66+33X34=33×(66+34)=33X100=3300
=99*22+33*34=33*3*22+33*34=33*66+33*34=33*(66+34)=33*100=3300
99x22+33x34=33x3x22+33x34=33x(66+34)=33x100=3300