(Only listed and not counted) Vitality Washing Machine Factory produces a batch of washing machines. It originally planned to produce 60 sets per day, and it could complete the task on time; it actually produced 75 sets per day, but it ended up completing the task in 56 days. How many days was originally planned to complete the task?
(只列算式不计算)活力洗衣机厂生产一批洗衣机，原计划每天生产60台，可以按时完成任务；实际每天生产75台，结果56天就完成了任务．原计划完成任务要多少天？
<gadget id="calculator">56 / 60</gadget>
<output>14/15 = around 0.933333</output>

<gadget id="calculator">75 * (14/15)</gadget>
<output>70</output>

<result>70</result>