Two people, A and B, go from A to B at the same time. A arrives 3 hours earlier than B. A travels 10 kilometers per hour, and B travels 8 kilometers per hour. How long does it take for A to complete the journey?
甲乙两人同时从A地到B地，甲比乙早到3小时，甲每小时行10千米，乙每小时行8千米，甲走完全程要几小时？
<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">8 * (3/2)</gadget>
<output>12</output>

<result>12</result>