A car drives from A to B. If the speed is increased by 20%, it can arrive 1 hour earlier than the original time. If it travels 90 kilometers at the original speed and then increases the speed by 30%, it can also arrive earlier than the original time. Arrive 1 hour early. How many kilometers are there between A and B?
一辆汽车从甲地开往乙地，如果把车速提高20%，可以比原定时间提前1小时到达，如果以原速行驶90千米后再将车速提高30%，也可以比原定时间提前1小时到达．甲、乙两地相距多少千米？
<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">90 / (5/3)</gadget>
<output>54</output>

<gadget id="calculator">54 * 6 * 1</gadget>
<output>324</output>

<result>324</result>