"the 6th ... the 7th ... the 8th ... the 9th" or "number 6 ... number 7 ... number 8 ... number 9." This shows the order in which the families were chosen. (See: [[rc://en/ta/man/translate/translate-ordinal]])
This refers to the sixth lot. The word "lot" may be supplied here and to the phrases concerning the rest of the lots. AT: "the second lot fell to" (See: [[rc://en/ta/man/translate/figs-ellipsis]])