A piece of cylindrical steel is 3 decimeters long and 2 decimeters in cross-sectional diameter. If the steel weighs 7.8 kilograms per cubic decimeter, how many kilograms does this piece of steel weigh?
一段圆柱形钢材，长3分米，横截面直径是2分米，如果每立方分米钢重7.8千克，这段钢材重多少千克？
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 3 * 7.8</gadget>
<output>73.476</output>

<result>73.476</result>