A car drives from point A to point B, and it has traveled (2/5), and it will arrive at point B just after driving 60km. How many kilometers are there between A and B?
一辆汽车从A地开往B地，已行了(2/5)，再行60km正好到达B地．A、B两地相距多少km？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">60 / (3/5)</gadget>
<output>100</output>

<result>100</result>