Two cars A and B start at the same time from places A and B, which are 520 kilometers apart, and drive toward each other. After 4 hours, the two cars meet. Car A travels 62 kilometers per hour. How many kilometers per hour does car B travel? (solution by equation)
甲、乙两辆汽车从相距520千米的A、B两地同时出发相向而行，经过4小时两车相遇，甲车每小时行62千米，乙车每小时行多少千米？(用方程解)
<gadget id="calculator">62 * 4</gadget>
<output>248</output>

<gadget id="calculator">520 - 248</gadget>
<output>272</output>

<gadget id="calculator">272 / 4</gadget>
<output>68</output>

<result>68</result>