The speed of a horse is about 62 kilometers per hour, and the speed of a cheetah is 0.5 times that of a horse. How many kilometers per hour is the speed of a cheetah?
一匹马的时速约为62千米，一只猎豹的速度是马的0.5倍，猎豹的时速约为多少千米．
<gadget id="calculator">62 * 0.5</gadget>
<output>31</output>

<result>31</result>