Taotao's speed is (2/3) of Pippi's speed. The two of them set off from A and B at the same time. If they walk towards each other for an hour and meet each other; if they walk in the same direction, how many hours will it take for Pippi to catch up with Taotao.
涛涛的速度是皮皮速度的(2/3)．他们两人分别由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，皮皮需要多少小时才能追上涛涛．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

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

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

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

<result>5</result>