By what proportion did the size of the united states increase as a result of the louisiana purchase

Louisiana purchase was known as the biggest real estate deal by the united states.  Thomas Jefferson was the president at the time of Louisiana purchase. The Louisiana territory was owned by the France before the purchase. The Louisiana purchase doubled the size of the United states. The united states need an important city of New Orleans and the port in Louisiana.

Aztec and hopi that was the main property