Xiaosong rides a bicycle from A to B, traveling 15.8 kilometers per hour, and arrives in 2.5 hours. How many kilometers are there between A and B?
小松骑自行车从甲地去乙地，每小时行15.8千米，2.5小时后到达，甲、乙两地相距多少千米？
<gadget id="calculator">15.8 * 2.5</gadget>
<output>39.5</output>

<result>39.5</result>