Two cars, A and B, drive opposite each other from two places. When car A travels the whole distance (4/5) and car B travels the whole distance (1/3), the distance between the two cars is 20 kilometers, and the distance between the two places How many kilometers is it?
甲、乙两俩汽车从两地相对开出，当甲车行了全程的(4/5)，乙车行了全程的(1/3)时，两车相距20千米，两地的距离是多少千米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">20 / (2/15)</gadget>
<output>150</output>

<result>150</result>