1. **State the problem:** Calculate the volume of a rectangular prism with length $14$ ft, width $9$ ft, and height $5$ ft. 2. **Formula:** The volume $V$ of a rectangular prism is given by the formula: $$V = \text{length} \times \text{width} \times \text{height}$$ 3. **Substitute the values:** $$V = 14 \times 9 \times 5$$ 4. **Calculate step-by-step:** $$14 \times 9 = 126$$ $$126 \times 5 = 630$$ 5. **Final answer:** The volume of the rectangular prism is $$\boxed{630}$$ cubic feet.