It is given that alex lives 500 yards from the park.
and it is asking how many inches does alex lives from the park.
So what we have to do is that we have to convert the yards to inches.
here , we know that
1 yard = 36 inches
it means
500 yards = 500*36 inches = 18000 inches.
Now the question says
Alex lives 500 yards from the park
It means Alex lives 18000 inches from the park.