Least Common Multiple of 30 and 69 by Listing Multiples

Multiples of 30: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, 450, 480, 510, 540, 570, 600, 630, 660, 690, 720, 750, …
Multiples of 69: 69, 138, 207, 276, 345, 414, 483, 552, 621, 690, …
LCM(30, 69) = 690