conical container has a circumference of 3.14 decimeters measured from the inside and a height of 3 decimeters. It is known that each cubic decimeter of water weighs 1 kilogram. How many kilograms of water can this container hold?
一个圆锥形容器，从里面量底面周长是3.14分米，高3分米，已知每立方分米的水重1千克，这个容器盛水多少千克？
<gadget id="calculator">3.14 / 3.14 / 2</gadget>
<output>0.5</output>

<gadget id="calculator">0.5 ** 2</gadget>
<output>0.25</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 * 0.25 * 3 * (1/3) * 1</gadget>
<output>0.785</output>

<result>0.785</result>