Daily Aliya for Naso, Sheni (2nd Aliya)
From Chabad.org: The total for the Gershon family: 2,630. The Merari family: 3,200. Thus the grand total of Levites eligible to transport the Tabernacle and its vessels: 8,580.
The final Passuk in this Aliya exclaims that each Levite was counted according to their Avoda (work) and according to their Massa (burden). Apparently, work was not considered a burden to them, as we too often equate an enjoyable job as one we would never consider a burden.