The truck travels 58 kilometers per hour, and the passenger car travels 42 kilometers per hour. The two vehicles travel towards each other from A and B respectively, and meet each other after 7 hours. Find the distance between A and B in kilometers? (two ways to answer)
货车每小时行驶58千米，客车每小时行驶42千米，两车分别从A、B两地相向而行，7小时后相遇．求A、B两地相距多少千米？(两种方法解答)
<gadget id="calculator">58 * 7</gadget>
<output>406</output>

<gadget id="calculator">42 * 7</gadget>
<output>294</output>

<gadget id="calculator">406 + 294</gadget>
<output>700</output>

<result>700</result>