A rectangular reed mat with a length of 6.78 meters and a width of 2 meters is used to form a cylindrical grain storage (the length is used as the circumference of the bottom surface), and the joints overlap by 0.5 meters. If each cubic meter of wheat weighs 600 kilograms, how many kilograms of wheat can be stacked in this grain storage?
用一张长6.78米，宽2米的长方形芦席围成一个圆柱形粮囤(长作底面的周长)，接头处重叠0.5米．如果每立方米小麦重600千克，这个粮囤可以堆放小麦多少千克？
<gadget id="calculator">6.78 - 0.5</gadget>
<output>6.28</output>

<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 1 * 2 * 600</gadget>
<output>3_768</output>

<result>3_768</result>