A cylindrical oil drum is measured from the inside, the circumference of the bottom is 62.8 cm, and the height is 30 cm. If 1 liter of diesel weighs 0.85kg, how many kilograms of diesel can this barrel hold?
一个圆柱形油桶从里面量，底面周长是62.8cm，高是30cm．如果1升柴油重0.85kg，这个油桶可以装柴油多少kg？
<gadget id="calculator">62.8 / 3.14 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">3.14 * 100 * (3/10) * 0.85</gadget>
<output>80.07</output>

<result>80.07</result>