525*15=7875
9660/30=322
7875+322=8197
8197-2837=5360
1.)124949:307=407
2.)500200-407= 499793
3.)499793+124535=624328
11+22^2+33^3=36432.
22 во второй степени =484; 33 в третьей степени=35937 =>11+484+35937=36432
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
1)(823-374)+(3477-3086)=840; 2)(15+2)×(15-2)=221; 3)(209+193):(42930-42924)=67.