A conical wheat pile has a bottom diameter of 4 meters and a height of 1.5 meters. Calculated as 700 grams per cubic meter, how many kilograms does this pile of wheat weigh?
一个圆锥形麦堆，底面直径4米，高1.5米，按每立方米重700克算，这堆麦堆重多少千克？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 * 4 * 1.5 * (1/3)</gadget>
<output>6.28</output>

<gadget id="calculator">700 * 6.28</gadget>
<output>4_396</output>

<result>4_396</result>