A cylindrical oil drum has a base diameter of 4dm and a height of 6dm measured from the inside. If gasoline is 0.8 kilograms per liter, how many kilograms of gasoline can this barrel hold?
一个圆柱形油桶，从里面量得底面直径4dm，高6dm．如果每升汽油0.8千克，这个油桶能装汽油多少千克？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</output>

<gadget id="calculator">0.8 * 75.36</gadget>
<output>60.288</output>

<result>60.288</result>