Medals in all

Probability Level 4

In a sports contest, a total of $m$ medals were awarded over $n$ days. On the first day, one medal and $\frac{1}{7}$ of the remaining medals were awarded. On the second day, two medals and $\frac{1}{7}$ of the remaining medals were awarded, and so on. On the last day, the remaining $n$ medals were awarded.

What is $m+n?$