A cylindrical gasoline tank has a bottom circumference of 25.12m and a height of 10m. If gasoline weighs 0.7 tons per cubic meter, how many tons of gasoline can this tank hold?
一个圆柱形的汽油罐，底面周长是25.12m，高是10m，如果每立方米汽油重0.7吨，这个油罐可装汽油多少吨？
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 4 * 10 * 0.7</gadget>
<output>351.68</output>

<result>351.68</result>