\(1\frac{7}{25} = 1 + \frac{7}{25} = 1 + \frac{28}{100} = 1,28\)
\(2,28 - 1,28 = 1\)
\(1 : \frac{4}{9} = 1 \cdot \frac{9}{4} = \frac{9}{4} = 2,25\)
\(0,375 = \frac{375}{1000} = \frac{3}{8}\)
\(\frac{3}{8} : \frac{1}{6} = \frac{3}{8} \cdot 6 = \frac{18}{8} = \frac{9}{4} = 2,25\)
\(2,25 - 2,25 = 0\)
Ответ: 0