It takes Xiao Fang 8 hours to walk from A to B, and he has already walked for 5.5 hours, and there are still 12.5 kilometers left. How many kilometers are there between A and B?
小方从甲地到乙地需走8小时，已经走了5.5小时，还剩12.5千米．甲乙两地相距多少千米？
<gadget id="calculator">8 - 5.5</gadget>
<output>2.5</output>

<gadget id="calculator">12.5 / 2.5</gadget>
<output>5</output>

<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<result>40</result>