1. (8 points) Calculate: $(18 \times 23-24 \times 17) \div 3+5$, the result is
【Solution】Solve: $(18 \times 23-24 \times 17) \div 3+5$
$$
\begin{array}{l}
=(6 \times 3 \times 23-6 \times 4 \times 17) \div 3+5 \\
=6 \times(3 \times 23-4 \times 17) \div 3+5 \\
=6 \times(69-68) \div 3+5 \\
=6 \div 3+5 \\
=7
\end{array}
$$

Therefore, the answer is: 7.