Find the least common multiple of 15 and 18 36 and 24 25 and 30 27 and 9

Find the least common multiple of 15 and 18 36 and 24 25 and 30 27 and 9

Find the least common multiple of:
15 and 1890;
36 and 24 72;
25 and 30 150;
27 and 9 27;