A conical granary has a bottom radius of 3 meters and a height of 2 meters. Each cubic meter of wheat weighs 780 kilograms. How many kilograms of wheat does this granary contain?
一个圆锥形粮仓底面半径3米，高2米，每立方米小麦重780千克，这个粮仓装多少千克小麦．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 2 * 780</gadget>
<output>14_695.2</output>

<result>14_695.2</result>