A cylindrical grain hoard measures 6.28 meters in circumference, 2 meters in height, and weighs 800 kilograms per cubic meter of corn. How many kilograms of corn can this grain store hold?
一个圆柱体粮囤，测得底面周长6.28米，高2米，每立方米玉米重800千克．这个粮囤可装玉米多少千克？
<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 2 * 800</gadget>
<output>5_024</output>

<result>5_024</result>