Sum Column w/ Distinct Filters Help

Hello

I needed a bit of help suming a column by distinct filters.

Please see below image.

I would like to write a measure that totals number of students by territory and by program.  The number of students would change depending on Territory and by Program selected via my slicers.

So what I would like my Students column total to be is 7,780 (5,139 + 1,061 + 1,580).

Not having much luck using a calculated function.

Any ideas?

Thanks