\(\frac{18}{25}\times\frac{4}{9}\times\frac{50}{54}\)
cau nay lam nhu the nao ha moi nguoi nguoi oi
\(\frac{18\times4\times50}{25\times9\times54}=\ \frac{1\times4\times2}{1\times9\times3}=\frac{8}{27}\)