1. (3 points) Calculate: $\left[\left(0.8+\frac{1}{5}\right) \times 24+6.6\right] \div \frac{9}{14}-7.6=(\quad$ )
A. 30
B. 40
C. 50
D. 60
【Analysis】First calculate the expression inside the small parentheses, then the multiplication inside the middle brackets, followed by the addition inside the middle brackets, and finally the division and subtraction outside the brackets.

【Solution】Solution: $\left[\left(0.8+\frac{1}{5}\right) \times 24+6.6\right] \div \frac{9}{14}-7.6$
$$
\begin{array}{l}
=[(0.8+0.2) \times 24+6.6] \div \frac{9}{14}-7.6 \\
=[1 \times 24+6.6] \div \frac{9}{14}-7.6 \\
=30.6 \div \frac{9}{14}-7.6 \\
=30.6 \times \frac{14}{9}-7.6 \\
=47.6-7.6 \\
=40
\end{array}
$$

Therefore, the correct answer is: B.