A car travels from A to B at 50 kilometers per hour and arrives in 6 hours. If the line is 20% more per hour, how many hours will it arrive? (Solution with proportional knowledge)
一辆汽车从甲地开往乙地，若每小时行50千米，6小时到达．若每小时多行20%，几小时到达？(用比例知识解)
<gadget id="calculator">50 * 6</gadget>
<output>300</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">50 * (1/5)</gadget>
<output>10</output>

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

<gadget id="calculator">300 / 60</gadget>
<output>5</output>

<result>5</result>