+104 Set up the long addition
519628
+761943
-----------
Calculate 8 + 3, which is 11.
Since 11 is two-digit, we carry the first digit 1 to the next column.
1
519628
+761943
----------
1
Calculate 2 + 4, which is 6. Now add the carry digit of 1, which is 7.
1
519628
+761943
-----------
71
Calculate 6 + 9, which is 15.
Since 15 is two-digit, we carry the first digit 1 to the next column.
1 1
519628
+761943
----------
571
Calculate 9 + 1, which is 10. Now add the carry digit of 1, which is 11.
Since 11 is two-digit, we carry the first digit 1 to the next column.
11 1
519628
+761943
-----------
1571
Calculate 1 + 6, which is 7. Now add the carry digit of 1, which is 8.
11 1
519628
+761943
-----------
81571
Calculate 5 + 7, which is 12.
Since 12 is two-digit, we carry the first digit 1 to the next column.
1 11 1
519628
+761943
281571
Bring down the carry digit of 1.
1 11 1
519628
+761943
1281571
Therefore, 519628 + 761943 = 1281571.
12815711281571
