Two boats sailed towards each other at the same time. The fast boat travels 20 kilometers per hour, and the slow boat travels 18 kilometers per hour. They meet after 5 hours. How many kilometers are the distance between the two places?
两条船同时从两地相向而行．快船每小时行20千米，慢船每小时行18千米，5小时后相遇，两地相距多少千米？
<gadget id="calculator">20 + 18</gadget>
<output>38</output>

<gadget id="calculator">38 * 5</gadget>
<output>190</output>

<result>190</result>