Step 1: Set up the long addition.
2 7 8
+ 5 3 7
________
Step 2: Calculate 8 + 7, which is 15.
Since 15 is two-digit, we carry the first digit 1 to the next column.
1
2 7 8
+ 5 3 7
________
5
Step 3: Calculate 7 + 3, 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.
1 1
2 7 8
+ 5 3 7
________
1 5
Step 4: Calculate 2 + 5, which is 7. Now add the carry digit of 1, which is 8.
1 1
2 7 8
+ 5 3 7
________
8 1 5
Step 5: Therefore, 278 + 537 = 815.
Your answer is 815.
Done! :)
