Xavier knows that his bedroom door is $7$7 ft high. Xavier measures that he is $18$18 inches shorter than the door.
What is Xavier's height in inches?
Phoebe walks $72$72 meters to the bus stop, catches a bus for $2.1$2.1 kilometers, then catches a train for $16.79$16.79 kilometers, and then walks another $370$370 meters.
The length around a bus wheel is $3$3 meters.
Passengers have a limit of $30$30 kg of luggage on a plane.