A conical grain pile is 1.2 meters high and covers an area of 12 square meters. Put this pile of grains into the granary, which just takes up (2/7) of the volume of the granary. Find the volume of the granary.
一个圆锥形谷堆高1.2米，占地12平方米，把这堆谷子装进粮仓里，正好占粮仓容积的(2/7)，求这个粮仓的容积．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1.2 / (2/7)</gadget>
<output>4.2</output>

<gadget id="calculator">(1/3) * 12 * 4.2</gadget>
<output>16.8</output>

<result>16.8</result>