Let the second of the three consecutive multiples of 6 be 6n Then the first is 6n - 6 and the last is 6n + 6; and: (6n - 6) + 6n + (6n + 6) = 666 → 18n = 666 → n = 37 → the consecutive multiples of 6 which sum to 666 are 216, 222, 228

222, 444, 666, 888, 1110, 1332, 1554, 1776, 1998, 2220 Get out your calculator! Go 222 (enter) then go +222 (enter). On most calculators, you can keep on pressing (enter) - or "=" - and the calculator will keep on giving multiples of 222.