Two cars, A and B, are traveling in opposite directions. Car A travels 40 kilometers per hour, and car B travels 42 kilometers per hour. Car B leaves after 1 hour. When the cars meet, how many kilometers are the distance between the two places?
甲、乙两车从两地用对而行，甲车每小时行40千米，乙车每小时行42千米，甲车开出1小时后，乙车才开出，又经过1.5小时两车相遇，两地相距多少千米？
<gadget id="calculator">1 + 1.5</gadget>
<output>2.5</output>

<gadget id="calculator">40 * 2.5</gadget>
<output>100</output>

<gadget id="calculator">42 * 1.5</gadget>
<output>63</output>

<gadget id="calculator">100 + 63</gadget>
<output>163</output>

<result>163</result>