Final answer:
The distance between Ellie's house and her parents' house is 624 miles.
Step-by-step explanation:
To find the distance between Ellie's house and her parents' house, we subtract the initial mileage from the final mileage on the car. The initial mileage is 46,817 and the final mileage is 47,441. Subtracting these gives us a distance of 624 miles traveled by Ellie's parents. So, Ellie's house is 624 miles away from her parents' house.