(1x3x24+2x6x48+3x9x72)/(1x2x4+2x4x8+3x6x12) =(1x3x24+8x1x2x24+27x1x3x24)/(1x2x4+8x1x2x4+27x1x2x4) =(1+8+27)x1x3x24 /[=(1+8+27)x1x2x4] =(3x24)/(2x4) =3x3 =9
