Processing a batch of parts, plan to process 40 per hour, 6 hours to complete, the actual processing per hour is 20% more than planned per hour, how many hours will it actually take to process this batch of parts? (Answer with proportional knowledge)
加工一批零件，计划每小时加工40个，6小时完成，实际每小时比计划每小时多加工20%，实际加工完这批零件要多少小时？(用比例知识解答)
<gadget id="calculator">40 * 6</gadget>
<output>240</output>

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

<gadget id="calculator">40 * (1/5)</gadget>
<output>8</output>

<gadget id="calculator">40 + 8</gadget>
<output>48</output>

<gadget id="calculator">240 / 48</gadget>
<output>5</output>

<result>5</result>