Question: Work out three hundred and seven point two eight plus eighty point nine seven six.
1. **State the problem:** We need to calculate the sum of $307.28$ and $80.976$.
2. **Write the addition expression:**
$$307.28 + 80.976$$
3. **Align the decimal points and add:**
\begin{array}{r}
307.280 \\
+ 80.976 \\
\hline
\end{array}
4. **Add the numbers column by column:**
- Thousandths place: $0 + 6 = 6$
- Hundredths place: $8 + 7 = 15$, write $5$ carry $1$
- Tenths place: $2 + 9 = 11$, plus carry $1$ equals $12$, write $2$ carry $1$
- Units place: $7 + 0 = 7$, plus carry $1$ equals $8$
- Tens place: $0 + 8 = 8$
- Hundreds place: $3 + 0 = 3$
5. **Write the final sum:**
$$388.256$$
**Answer:** $307.28 + 80.976 = 388.256$