г) 200 \(\cdot \frac{26}{4000} \cdot \frac{2}{13}\).

1) \(\frac{26}{4000} \cdot \frac{2}{13} = \frac{26 \cdot 2}{4000 \cdot 13} = \frac{13 \cdot 2 \cdot 2}{4000 \cdot 13} = \frac{4}{4000} = \frac{1}{1000}\)

2) 200 \(\cdot \frac{1}{1000} = \frac{200}{1000} = \frac{2}{10} = \frac{1}{5}\)

Ответ: \(\frac{1}{5}\)