\(\left(\dfrac{13}{18}\times1,4-2,5\times\dfrac{7}{180}\right):\dfrac{7}{18}\)
\(=\left(\dfrac{13}{18}\times\dfrac{14}{10}-\dfrac{25}{10}\times\dfrac{7}{180}\right)\times\dfrac{18}{7}\)
\(=\left(\dfrac{13}{18}\times\dfrac{7}{5}-\dfrac{5}{2}\times\dfrac{7}{180}\right)\times\dfrac{18}{7}\)
\(=\left(\dfrac{91}{90}-\dfrac{7}{72}\right)\times\dfrac{18}{7}\)
\(=\dfrac{329}{360}\times\dfrac{18}{7}=\dfrac{47}{20}\)
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