How many feet is in $$3$$ miles?
$$3$$ miles have $$15840$$ feet
Explanation:
Each mile has $$8$$ furlongs.
Each furlong has $$220$$ yards.
Each yard has $$3$$ feet.
So each mile has $$8\times 220\times 3=5280$$ feet.
And $$3$$ miles have $$5280\times 3=15840$$ feet.