1. The problem is to find the sum of the numbers 10, 80, 1, and 5. 2. The formula for the sum of numbers is $$\text{Sum} = a + b + c + d$$ where $a$, $b$, $c$, and $d$ are the numbers. 3. Substitute the given numbers into the formula: $$\text{Sum} = 10 + 80 + 1 + 5$$ 4. Add the numbers step-by-step: $$10 + 80 = 90$$ $$90 + 1 = 91$$ $$91 + 5 = 96$$ 5. Therefore, the sum of the numbers is $$96$$.