The diameter of a wheel is 55 cm, how much m does the wheel move in one revolution?
一个车轮的直径为55cm，车轮转动一周，大约前进多少m．
<gadget id="calculator">55 / 100</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">3.14 * (11/20)</gadget>
<output>1.727</output>

<result>1.727</result>