The average speed of the giraffe is 51 km/h, and the average speed of the African elephant is 34 km/h. How many times faster does a giraffe travel on average than an African elephant?
长颈鹿行进的平均速度为51千米/小时，非洲象行进的平均速度为34千米/小时．长劲鹿行进的平均速度是非洲象的多少倍？
<gadget id="calculator">51 / 34</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>