It takes 2 hours for a small boat to travel from A to B and back again. 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. So how many kilometers are there between A and B?
一只小船从甲地到乙地往返一次共用去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．那么甲、乙两地相距多少千米？
<gadget id="calculator">6 / 8</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">2 - (3/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">6 / 2 / (1/4)</gadget>
<output>12</output>

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

<result>15</result>