Solution:
1. Add the given numbers:
- 465 + 309
2. Perform the addition:
- First, add the units: 5 + 9 = 14. Write down 4 and carry over 1.
- Next, add the tens: 6 + 0 + 1 = 7.
- Finally, add the hundreds: 4 + 3 = 7.
3. Combine the results to get:
- 465 + 309 = 774