$$\frac{17}{6} \cdot \frac{3}{34} = \frac{17 \cdot 3}{6 \cdot 34} = \frac{17 \cdot 3}{6 \cdot 2 \cdot 17} = \frac{3}{6 \cdot 2} = \frac{3}{12} = \frac{1}{4} = 0.25$$
Ответ: 0.25