Jinli Garment Factory plans to produce 320 suits per day and complete the task in 25 days. The actual production is 400 pieces per day, and how many days are actually used to complete the task?
金利服装厂计划每天生产西装320件，25天完成任务．实际每天生产400件，实际用几天完成任务？
<gadget id="calculator">25 / 400</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">320 * (1/16)</gadget>
<output>20</output>

<result>20</result>