There is a cylindrical cement granary with a perimeter of 31.4 meters and a height of 3.3 meters. The volume of grain currently loaded accounts for 40% of the volume of this granary. How many tons of grain has been loaded in this granary? (Each cubic meter of grain weighs about 540 kilograms)
有一个圆柱形水泥粮仓，它的底面周长是31.4米，高是3.3米．现在装的粮食体积占这个粮仓体积的40%．这个粮仓已装粮食多少吨？(每立方米粮食约重540千克)
<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">540 / 1_000</gadget>
<output>27/50 = around 0.54</output>

<gadget id="calculator">3.14 * 25 * 3.3 * (2/5) * (27/50)</gadget>
<output>55.9548</output>

<result>55.9548</result>