2004 Toyota Avalon Fuel Gauge

My fuel gauge reading on the instrument cluster that tells you how many miles you have left to drive once you fill up the gas tank does not work properly.
When I fill up the tank, the gauge usually reads 250 miles. Later on, the tank reading will increase to about 370 miles. Is there anything that I can do to get the car to recognize the complete fuel capacity when I initially fill the tank? Thanx