A car plans to cover a distance of 300 kilometers in 6 hours, but it actually takes 5 hours to complete the journey. How many kilometers per hour does the actual speed exceed the plan?
一辆汽车计划6小时行完300千米的路程，实际用了5小时就走完，实际的速度比计划每小时多行多少千米？
<gadget id="calculator">300 / 5</gadget>
<output>60</output>

<gadget id="calculator">300 / 6</gadget>
<output>50</output>

<gadget id="calculator">60 - 50</gadget>
<output>10</output>

<result>10</result>