The sum of $78 + 19$ is:

$78 + 19 = 97$

Would you like a detailed breakdown or have any questions?

Here are 5 related questions to explore:

1. What is $97 - 19$?
2. Can you calculate $97 \times 2$?
3. What is the sum of $78 + 19 + 25$?
4. What is the average of $78$, $19$, and $97$?
5. Can you solve $97 \div 2$ as a mixed number?

Tip: Double-check addition by breaking numbers into parts (e.g., $78 + 19 = (78 + 20) - 1 = 97$).