300
225
450, 675, 900 ...
150, 225, 300, 375, 450, 525, 600, 675 +75 . . .
675
150 225 300 375 450 525 600 675 750 and so on ...
675 ÷ 3 = 225
225 x 3 = 675
LCM(135, 225) = 675.
225, 450, 675, 900, and 1125.
225, 450, 675, 900, 1125
It is 225, which is 15 squared.
84.375