The farm tool factory produces a batch of farm tools. The original plan is to produce 80 sets per day, and the task can be completed in 20 days. If the production is 25% more than the original plan every day, how many days will it take to complete the task? (answer with ratio)
农具厂生产一批农具，原计划每天生产80台，20天可完成任务．如果每天比原计划多生产25%，需多少天能完成任务？(用比例解答)
<gadget id="calculator">80 * 20</gadget>
<output>1_600</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">80 * (1/4)</gadget>
<output>20</output>

<gadget id="calculator">80 + 20</gadget>
<output>100</output>

<gadget id="calculator">1_600 / 100</gadget>
<output>16</output>

<result>16</result>