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Racy Addition

Racy Addition
  345672148
+356809876
----------------------
  702482024
3+3=6 start addition from left side.
Check whether the next number (also the other next digits. )is more than ten or less than 10
If more than ten then add 1 to previous no.6+1=7.
Proceed in the same way.

   7895322422168
+4890886432211
__________________=12786208854379
12
    78
        620
            8854379
    

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