A car travels 45 kilometers per hour and a motorcycle travels 60 kilometers per hour. They drive from places A and B at the same time and drive toward each other. They meet after 4 hours. After meeting, the two cars continue to move forward. How many hours will it take for the motorcycle to reach place A? (Solution of column equation)
汽车每小时行45千米，摩托车每小时行60千米．它们分别从甲、乙两地同时开出相向而行，4小时后相遇，相遇后两车继续前行，问摩托车到达甲地还需行多少小时？(列方程解)
<gadget id="calculator">45 * 4</gadget>
<output>180</output>

<gadget id="calculator">180 / 60</gadget>
<output>3</output>

<result>3</result>