DIFFICULT 3 + 8 = 2361, 7 + 9 = 6296 .. Puzzle for Geniuses

[syed Tabish]

I m not able to solve it is anyone uplod the solution plss??

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(x*y)100+(x-y)10+(x+y)
It is based on this formula put value 3 in x and 8 in y then calculate... you will find out right answer