How much did President James Polk paid President Santana for the territories anexed to the US after the Mexican-American War?

For a payment of $15,000,000, including $3,000,000 in civilian claims, the United States received from Mexico more than 525,000 square miles (1,360,000 square km) of land, which form the present-day states of Arizona, California, Nevada, New Mexico, Texas, and Utah. and portions of the present-day states of Oklahoma, Colorado, Kansas, and Wyoming.

This is from the wikipedia:

The 1848 Treaty of Guadalupe Hidalgo ended the war and specified its major consequence: the Mexican Cession of the territories of Alta California and Santa Fe de Nuevo México to the United States. The U.S. agreed to pay $15 million compensation for the physical damage of the war. In addition, the United States assumed $3.25 million of debt owed by the Mexican government to U.S. citizens. Mexico acknowledged the loss of Texas and thereafter cited the Rio Grande as its national border with the United States.