7.8.91+8.9.101+9.10.111..............+20.21.221 can be expressed as βα, where α and β are coprime, positive integers. Determine α+β.
Details and Assumptions:- a.b is the same as a×b. The LCM of (7,8,9,10,.....,20,21,22) is 232792560.
Extra Credit:- Find out what that image has to do with the answer.