28
They are all the multiples of 16.They are all the multiples of 16.They are all the multiples of 16.They are all the multiples of 16.
Not all multiples of 40 are multiples of 80. Only the even multiples of 40 are also multiples of 80. The odd multiples, e.g. 40, 120, 200, 280, and 360, are not multiples of 80.
... 7 x 30 = 210, that should give you a clue...
Multiples of the multiples of 10
The first 15 multiples of 224: 224, 448, 672, 896, 1120, 1344, 1568, 1792, 2016, 2240, 2464, 2688, 2912, 3136, 3360 . . .
The first 20 multiples of 192: 192, 384, 576, 768, 960, 1152, 1344, 1536, 1728, 1920, 2112, 2304, 2496, 2688, 2880, 3072, 3264, 3456, 3648, 3840 . . .
2688.888... = 2688 8/9 = (9*2688 + 8)/9 = 24200/9
28
84
The Bold and the Beautiful - 1987 1-2688 was released on: USA: 8 December 1997
2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 = 2688 2 to the seventh power x 3 x 7 = 2688
8,064 feet.
2688
896, 1792, 2688, 3584 . . .
2688 miles
Even numbers