cylindrical bucket has a bottom circumference of 6.28 decimeters and a water depth of 4 decimeters. A cuboid with a volume of 3.14 cubic decimeters is placed in the bucket. If it is taken out, how many decimeters should the water level drop?
一只圆柱形水桶，底面周长是6.28分米，水深4分米，在桶内放一块体积为3.14立方分米的长方体，如果把它拿出来，水面应下降几分米？
<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

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

<gadget id="calculator">3.14 / 1</gadget>
<output>3.14</output>

<gadget id="calculator">3.14 / 3.14</gadget>
<output>1</output>

<result>1</result>