1. (8 points) Calculate: $2013 \div(25 \times 52-46 \times 15) \times 10=$
【Solution】Solve: $2013 \div(25 \times 52-46 \times 15) \times 10$
$$
\begin{array}{l}
=2013 \div(5 \times 2 \times 5 \times 26-23 \times 2 \times 3 \times 5) \times 10 \\
=2013 \div(10 \times 5 \times 26-23 \times 3 \times 10) \times 10 \\
=2013 \div(5 \times 26-23 \times 3) \\
=2013 \div(130-69) \\
=2013 \div 61 \\
=33 ;
\end{array}
$$

Therefore, the answer is: 33.