Manufacture a batch of toys, plan to produce 25 pieces per day, complete in 28 days, actually produce 35 pieces per day, how many days to complete the task?
制造一批玩具，计划每天生产25件，28天完成，实际每天生产35件，实际几天完成任务？
<gadget id="calculator">28 / 35</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">25 * (4/5)</gadget>
<output>20</output>

<result>20</result>