car drives from city A to city B at a speed of 60 kilometers per hour. When returning, it travels 20 kilometers more per hour than before, so it takes 3 hours less to return than when it came. The distance between the two cities How many kilometers is it?
一辆汽车以每小时60千米的速度由甲城开往乙城，返回时，每小时比原来多行20千米，所以回来的时候比来时少用3小时，两城之间的路程是多少千米？
<gadget id="calculator">60 + 20</gadget>
<output>80</output>

<gadget id="calculator">80 - 60</gadget>
<output>20</output>

<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">80 * (3/20)</gadget>
<output>12</output>

<gadget id="calculator">60 * 12</gadget>
<output>720</output>

<result>720</result>