【Analysis】Both shaded parts are trapezoids with equal bases (the upper base is 4, the lower base is 10). When combined, the height can be considered as 10 $-4=6$. Then, using the formula for the area of a trapezoid $S=(a+b) h \div 2$, substitute the data to solve.

【Solution】Solution: According to the analysis,
$$
\begin{aligned}
& (4+10) \times(10-4) \div 2 \\
= & 14 \times 6 \div 2 \\
= & 42
\end{aligned}
$$

Answer: The area of the shaded part in the figure is 42.
Therefore, the answer is: 42.
17. Two squares with side lengths of 4 and 10 are placed as shown in the figure. Then the area of the shaded part in the figure is $\qquad$

 untranslated part: 

(If there was a figure, it would be mentioned here, but since the original text does not include a figure, this part remains unchanged.)