Final Pressure of Isothermally Compressed Gas

In a closed system, a gas is compressed isothermally (at a constant temperature) from an initial volume of 5.0 liters to a final volume of 2.0 liters. The gas has an initial pressure of 1.0 atmosphere. According to the ideal gas law, what is the final pressure of the gas after the compression?

Assume that there are no phase changes and that the temperature remains constant throughout the process.