A ship sails from Port A to Port B. On the first day, the whole journey (1/2) is more than 16 kilometers. On the second day, the distance traveled is (7/8) the first day. At this time, it is still far away from Port B. There are 15 kilometers. What is the distance in kilometers between A and B?
一轮船从甲港开往乙港，第一天行了全程的(1/2)多16千米，第二天行的路程是第一天的(7/8)，这时候离乙港还有15千米．问甲、乙两港之间相距是多少千米？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">16 * (7/8)</gadget>
<output>14</output>

<gadget id="calculator">16 + 15 + 14</gadget>
<output>45</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (7/8)</gadget>
<output>7/16 = around 0.4375</output>

<gadget id="calculator">1 - (1/2) - (7/16)</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">45 / (1/16)</gadget>
<output>720</output>

<result>720</result>