8 4 , 2 5
+ 3 2 , 1 8
___________________________
1 1 6 , 4 3
retenues: 5+8=13
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8 4 , 2 5
+ 3 2 , 1 8
___________________________
1 1 6 , 4 3
retenues: 5+8=13
+ 3 2 , 1 8
—————————
1 1 6 , 4 3