### Instruction: Simplify $15 \cdot \frac{7}{10} \cdot \frac{1}{9}$.### Response: To simplify a product of fractions, I can multiply the numerators and the denominators separately.
This gives me $\frac{15 \cdot 7 \cdot 1}{10 \cdot 9 \cdot 1} = \frac{105}{90}$.
I can simplify this fraction by dividing both the numerator and the denominator by their greatest common factor, which is 15.
This gives me $\frac{105}{90} \div \frac{15}{15} = \frac{7}{6}$.