A \[64\,\text{kg}\] snowboarder launches off a ramp. At the top of his jump he is \[3.1\,\text{m}\] above the ground and has a speed of \[21\,\text{m/s}\]. Use \[g = 9.8\,\text{m/s}^2\]. Calculate the mechanical energy of the snowboarder. Round your answer to the nearest thousand.