1. The problem is to simplify the expression \(14 \div x \div a \times 45\). 2. Division and multiplication are performed from left to right. 3. First, divide 14 by \(x\): \(\frac{14}{x}\). 4. Next, divide the result by \(a\): \(\frac{14}{x} \div a = \frac{14}{x} \times \frac{1}{a} = \frac{14}{ax}\). 5. Finally, multiply by 45: \(\frac{14}{ax} \times 45 = \frac{14 \times 45}{ax} = \frac{630}{ax}\). 6. So, the simplified expression is \(\frac{630}{ax}\).