(0.47 x 0.47 x 0.47 - 0.33 x 0.33 x 0.33) / (0.47 x 0.47 + 0.47 x 0.33 + 0.33 x 0.33) =?

Given expression
= [(0.47)³ - (0.33)³] / [(0.47)² + 0.47 x 0.33 + (0.33)²]
= [a³ - b³ ] / [ a² + ab + b²]
= [(a-b) (a² + ab + b²)] / [(a² + ab + b²)]
= (a - b)
= (0.47 - 0.33)
= 0.14