A conical grain heap is 1.2 meters high, and the circumference of the bottom is 18.84 meters. The grains stored in a granary just take up (2/5) the volume of the granary. How big is the volume of the granary?
一个圆锥形谷堆高1.2米，底面周长是18.84米，将这些谷子存放在一个粮仓里正好占粮仓容积的(2/5)这个粮仓的容积有多大？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

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

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1.2 / (2/5)</gadget>
<output>3</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 3</gadget>
<output>28.26</output>

<result>28.26</result>