From A to B, if the speed is increased by 20%, you can arrive 1 hour earlier than the original time; if you drive 120 kilometers at the original speed, and then increase the speed by 2%, you can arrive 40 minutes earlier, ask A and B The distance between the two places.
从甲地到乙地，如果把车速提高20%，可以比原定时间提前1小时到达；如果按原速行驶120千米后，再将速度提高2%，则可提前40分钟到达，求甲乙两地之间的距离．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">1 / (6/5)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 - (5/6)</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">20 * (1/3)</gadget>
<output>20/3 = around 6.666667</output>

<gadget id="calculator">(1/3) * (1/3)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(20/3) / (1/9)</gadget>
<output>60</output>

<gadget id="calculator">6 * 60</gadget>
<output>360</output>

<result>360</result>