A and B set off at A and B respectively at the same time. If they walk toward each other, they will meet after 1 hour. If they go in the same direction, A will catch up with B after 3 hours. Question: A’s walking speed is B’s How many times?
甲、乙两人分别在A、B两地同时出发，如果相向而行，1小时后两人相遇，如果同向而行，3小时后甲追上乙，问：甲的步行速度是乙的几倍？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">(4/3) / 2</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(4/3) / 2 / (1/3)</gadget>
<output>2</output>

<result>2</result>