\[ 52\frac{1}{4} \times 32 = \frac{209}{4} \times 32 = 209 \times 8 = 1672 \]
\[ 0,4 : 25 = \frac{4}{10} : 25 = \frac{2}{5} \times \frac{1}{25} = \frac{2}{125} = 0,016 \]
\[ 1672 - 0,016 = 1671,984 \]
Ответ: 1671,984