A car travels 45 kilometers per hour from point A to point B, and arrives in 8 hours. It can be reached in 6 hours when returning, how many kilometers more per hour when returning than when going?
一辆汽车从甲地到乙地，去时每小时行45千米，8小时到达．回来时6小时可以到达，回来时每小时比去时多行多少千米？
<gadget id="calculator">8 / 6</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">45 * (4/3)</gadget>
<output>60</output>

<gadget id="calculator">60 - 45</gadget>
<output>15</output>

<result>15</result>