80/63 |4 -2 1 -1 0>
413.577806 cents
80/63, which is 441/440 (3.9 cents) flat of 14/11 and 5120/5103 (5.76 cents) sharp of 81/64 is the interval between 9/8 and 10/7 and 7/5 and 16/9. It is one of the ways approximate 11-limit harmony can appear in 7-limit scales.