Step 1. Set up long addition.
1 7 8 3 2
+ 3 1 2 4 5
___________
Step 2. Calculate 2 + 5, which is 7.
1 7 8 3 2
+ 3 1 2 4 5
___________
7
Step 3. Caculate 3 + 4, which is 7.
1 7 8 3 2
+ 3 1 2 4 5
___________
7 7
Step 4. Calculate 8 + 2, which is 10.Since 10 is two-digit, we carry the first digit 1 to the next column.
1
1 7 8 3 2
+ 3 1 2 4 5
___________
0 7 7
Step 5. Calculate 7 + 1, which is 8. Now add the carry digit of 1, which is 9.
1
1 7 8 3 2
+ 3 1 2 4 5
___________
9 0 7 7
Step 6. Calculate 1 + 3, which is 4.
1
1 7 8 3 2
+ 3 1 2 4 5
___________
4 9 0 7 7
Step 7. Therefore, 17832 + 31245 = 49077.
49077 is your answer
Done! :)