1. (8 points) The calculation result of $2012 \times \times \frac{3 \frac{3}{4} \times 1.3+3 \div 2 \frac{2}{3}}{(1+3+5+7+9) \times 20+3}$ is

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【Solution】Solve: $2012 \times \frac{3 \frac{3}{4} \times 1.3+3 \div 2 \frac{2}{3}}{(1+3+5+7+9) \times 20+3}$
$$
\begin{array}{l}
=2012 \times \frac{\frac{15}{4} \times 1.3+3 \times \frac{3}{8}}{25 \times 20+3} \\
=2012 \times \frac{\left(\frac{15}{4} \div 10\right) \times(1.3 \times 10)+3 \times \frac{3}{8}}{503} \\
=2012 \times \frac{\frac{3}{8} \times 13+3 \times \frac{3}{8}}{503} \\
=2012 \times \frac{\frac{3}{8} \times(13+3)}{503} \\
=2012 \times \frac{6}{503} \\
=24 ;
\end{array}
$$

Therefore, the answer is: 24.