22 、In parallelogram $\mathrm{ABCD}$, $\mathrm{E}, \mathrm{F}$ are on $\mathrm{AD}, \mathrm{AB}$ respectively. It is known that $S_{A F I E}=49, S_{\triangle B G F}=13, S_{\triangle D E H}=35$, find $S_{G C H I}=$ $\qquad$
According to the half model: $49+13+35+$ A + B = A + B + shaded area so the area of the shaded part is: $49+13+35=97$
Analysis: As shown in the figure below: