If the car travels from A to B at a certain speed, if it travels 15 kilometers per hour more than the original, then the time it takes is only the original (5/6); if it travels 15 kilometers per hour less than the original, then the time it takes 1.5 hours longer than before. Find the distance between A and B.
汽车以一定的速度从甲地到乙地，如果每小时比原来多行15千米，那么所用的时间只有原来的(5/6)；如果每小时比原来少行15千米，那么所用的时间比原来多1.5小时．求甲、乙两地之间的距离．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">(6/5) - 1</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">15 / (1/5)</gadget>
<output>75</output>

<gadget id="calculator">75 - 15</gadget>
<output>60</output>

<gadget id="calculator">60 / 75</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / (4/5)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1.5 / (1/4)</gadget>
<output>6</output>

<gadget id="calculator">75 * 6</gadget>
<output>450</output>

<result>450</result>