3. Fill in the circles with ten, one, $\times$, and $\div$ respectively, and fill in the rectangle with an appropriate integer, so that the following two equations are both true. At this time, what is the number in the rectangle?
$$
\begin{array}{l}
9 O 1307=100 \\
14 O 2 O 5=\square
\end{array}
$$
3. The number in the rectangle is 2
3.【Solution】The first equation must contain a multiplication sign. After trying, we get $9+13 \times 7=100, 14 \div 2$ $-5=2$. Therefore, the number in the rectangle is 2