leaflet. Is it possible to select multiple markers at the same time?

Question

leaflet

Good afternoon.
Comrades familiar with Leaflet, please tell me if it is possible (maybe a plugin) to select several markers and get general information on them? In GeoJSON, I have a population property that has a numeric value.
That is, I want to select, say, 3 markers and receive general information on them and the sum of Population 3 markers)
Is this possible at all?