B's speed is (2/3) of A's speed. Two people set off from A and B at the same time. If they walk towards each other and meet each other for 1 hour; if they walk in the same direction, how many hours will it take for A to catch up with B?
乙的速度是甲的速度的(2/3)．两人分别由A，B两地同时出发，如果相向而行1小时相遇；如果同向而行甲需多少小时才能追上乙？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<result>5</result>