Because I'm sure you're wondering, those are the numbers of:
a) books I finished while at the beach, which is low for me, but one of them was 700 pages [completed: Outlander (D.Gabaldon) and The Guernsey Literary and Potato Peel Pie Society (Shaffer/Barrows); halfway through: Neither Here Nor There (B. Bryson)]
b) the number of audio books completed on the drive [Comrades (S.Ambrose)]
c) the number of cassettes-worth of The Lord of the Rings that I made it through [specifically, one half of the first side of the first cassette; there were 20 in all, I think]. Thus, UTTER FAILURE on the Tolkien front. I shall give it a go sometime with the actual book.