1. The problem is to find the sum of 5 and 5555. 2. The formula for addition is simply $a + b = c$, where $a$ and $b$ are the numbers to add, and $c$ is the result. 3. Applying the formula: $5 + 5555 = 5560$. 4. So, the sum of 5 and 5555 is 5560.