It takes 2 hours for a small boat to travel from point A to point B and back. When coming back, the speed is 8 kilometers per hour more than the speed when going, so the second hour is 6 kilometers more than the first hour. Find the distance between A and B.
一只小船从A地到B地往返一次共用2小时．回来时顺水，比去时的速度每小时多行驶8千米，因此第二小时比第一小时多行驶6千米．求A至B两地距离．
<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / (1/4)</gadget>
<output>12</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">12 * (5/4)</gadget>
<output>15</output>

<result>15</result>