Cars A and B leave opposite places at the same time from places A and B, and meet each other in 4 hours. After the encounter, car B continues to move forward for 5 hours and arrives at point A. Car A travels 70 kilometers per hour, how many kilometers per hour does Car B travel?
甲乙两车同时从A、B两地相对开出，4小时相遇．相遇后乙车继续前行5小时到达A地．甲车每小时行70千米，乙车每小时行多少千米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">70 * (4/5)</gadget>
<output>56</output>

<result>56</result>