The sum of three consecutive multiples of 6 is 666, the multiples are 216, 222 and 228.
228, 456, 684 and so on.
57, 114, 171, 228, 285.
76, 152, 228, 304, 380
228, 456, 684
Multiples of 114 include 114, 228, 342 and so on. For them to be common, they need to be compared to another set of multiples.
57, 114, 171, 228, 285, 342.
There are an infinite number of multiples of 76, starting with 76*1 = 76, then 76*2 = 152, then 76*3 = 228.
38, 76, 114, 152, 190, 228, 266.
114, 228, 342
57, 114, 171, 228, 285.
38, 76, 114, 152, 190, 228, 266, 304