If a car drives from place A to place B, if the speed is increased by 20%, it can arrive 1 hour earlier than the original time; if the speed is increased by 30% after driving 100km at the original speed, it will also arrive earlier than the original time 1 hour to arrive. Find the distance between A and B.
一辆汽车从甲地开往乙地，如果把车速提高20%，那么可以比原定时间提前1小时到达；如果以原速度行驶100km后再将车速提高30%，那么也比原定时间提前1小时到达．求甲、乙两地的距离．
<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">1 / 1</gadget>
<output>1</output>

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<gadget id="calculator">13 - 10</gadget>
<output>3</output>

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

<gadget id="calculator">13 * (1/3)</gadget>
<output>13/3 = around 4.333333</output>

<gadget id="calculator">6 - (13/3)</gadget>
<output>5/3 = around 1.666667</output>

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

<gadget id="calculator">60 * 6 * 1</gadget>
<output>360</output>

<result>360</result>