1. (10 points) Calculate: $7 \frac{1}{3}-\left(2.4+1 \frac{2}{3} \times 4\right) \div 1 \frac{7}{10}=$
【Analysis】First calculate the multiplication inside the parentheses, then the addition inside the parentheses, followed by the division outside the parentheses, and finally the subtraction outside the parentheses.
【Solution】Solve: $7 \frac{1}{3}-\left(2.4+1 \frac{2}{3} \times 4\right) \div 1 \frac{7}{10}$
$$
\begin{array}{l}
=7 \frac{1}{3}-\left(2.4+\frac{20}{3}\right) \div 1 \frac{7}{10} \\
=7 \frac{1}{3}-\frac{136}{15} \div 1 \frac{7}{10} \\
=7 \frac{1}{3}-\frac{16}{3} \\
=2
\end{array}
$$

Therefore, the answer is: 2.