For the sake of simplification, let's say she's 52 years old. Assuming that she began inspecting dicks on her 18th birthday, that's 286 per year for 35 years, or roughly 6 per week with an annual 2 week vacation (presumably dickless).
And that is a ton of dicks.
Well, it sounds gross, kinda crude even for the DUmp, but a couple of years ago they got into a big pecker argument, a regular phallic free-for-all, sniping and attacking each other viciously as they always do.
Horse with no Brain designated herself as the final authority, quoting her experience from having closely examined that number.
With that, she won the argument. Many DUmp women and more than a few men have had experience with that many dicks, but mostly in the dark, so they deferred to her wisdom.