We can use place value in 2 digit addition.
4 + 3 = 7, but 5 + 8 = 13. = 10 + 3, so you carry a 1 to the next digit
7 + 1 = 8 and 13 - 10 = 3
83
5 + 8 = 13 and 7 + 9 = 16
13 + 1 = 14 and 16 - 10 = 6
0 + 1 = 1 and 14 - 10 = 4
146
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