7. (5 points) The "bat" pattern in the figure is composed of several isosceles right triangles and squares. Given that the area of the shaded part is 1, the area of the "bat" pattern is

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(Note: The last sentence is a note to the translator and should not be included in the final translation.)

7. (5 points) The "bat" pattern in the figure is composed of several isosceles right triangles and squares. Given that the area of the shaded part is 1, the area of the "bat" pattern is
27
【Analysis】There are two largest squares, each with an area of 8, so the total area of the two is 16; there are two medium squares, each with an area of 4, so the total area of the two is 8; the remaining 3 triangles have an area of 3; solve accordingly.
【Solution】Solution: $1 \times 8 \times 2+1 \times 4 \times 2+3 \times 1$
$$
\begin{array}{l}
=16+8+3 \\
=27
\end{array}
$$

Answer: The area of the "bat" pattern is 27.
Therefore, the answer is: 27.