<image>In a high school charity donation event, all the students actively participated and made donations $$. $$ A random sample was taken from Class $$(1)$$ of Grade Nine, and a statistical table and chart were drawn as follows:
\frac{     } Find: $$(Ⅰ)$$ m = ______ , n = ______ ; 
$$(Ⅱ)$$ Find the mode, median, and mean of the students' donation amounts; 
$$(Ⅲ)$$ Assuming the school has 2500 students, estimate the total amount of donations from all the students in the school?