7. During the pandemic, Teacher Zhao distributed masks to the students in the class. If half of the students each received 5 masks, and the other half each received 7 masks, there would be 25 left. If one-third of the students each received 10 masks, and the remaining two-thirds each received 7 masks, there would be a shortage of 35. Teacher Zhao prepared $\qquad$ masks in total.
\begin{tabular}{c}
7 \\
\hline 205
\end{tabular}