7. Xiao Ming, Xiao Hua, and Xiao Gang are dividing 363 cards among themselves, deciding to distribute them according to their age ratio. If Xiao Ming takes 7 cards, Xiao Hua should take 6 cards; if Xiao Gang takes 8 cards, Xiao Ming should take 5 cards. In the end, Xiao Ming took $\qquad$ cards; Xiao Hua took $\qquad$ cards; Xiao Gang took $\qquad$ cards.
Analysis: Continuous ratio and distribution according to the ratio.
The number of cards Xiao Ming, Xiao Hua, and Xiao Gang have is in the ratio of $(7 \times 5):(6 \times 5):(8 \times 7)=35: 30: 56$
So Xiao Ming has $363 \div(35+30+56) \times 35=105$ cards, Xiao Hua has $363 \div(35+30+56) \times 30=90$ cards, and Xiao Ming has $363 \div(35+30+56) \times 56=168$ cards.