The speed of the bicycle is 12 km/h and the speed of the motorcycle is 70 km/h. What fraction of the speed of the bicycle is the speed of the motorcycle?
自行车的速度是12千米/时，摩托车的速度是70千米/时．自行车的速度是摩托车的几分之几？
<gadget id="calculator">12 / 70</gadget>
<output>6/35 = around 0.171429</output>

<result>6/35 = around 0.171429</result>