12+ 12+566+13+32+23322+2323+21212+

12 + 12 + 566 + 13 + 32 + 23 322 + 2 323 + 21 212 = 47 492

1) 12 + 12 = 24

2) 24 + 566 = 590

3) 590 + 13 = 603

4) 603 + 32 = 635

5) 635 + 23 322 = 23 957

6) 23 957 + 2 323 = 26 280

7) 26 280 + 21 212 = 47 492

47 492.