Bluebulb Projects' The Measure of Things presents:
810 is about seven times the number of Elements on the Periodic Table.
In other words, it's 6.860 times the count of Elements on the Periodic Table, and the count of Elements on the Periodic Table is 0.1460 times that amount.
(a.k.a. Periodic Table of the Elements, a.k.a chemical elements) (confirmed elements as of 2016)