The TV factory plans to produce 75 TV sets per day and complete the task in 12 days, but actually produces 15 more sets per day. How many days can the task be completed? (Solving problems with proportional knowledge)
电视机厂计划每天产75台电视机，12天完成任务，实际每天多生产15台，多少天可以完成任务？(用比例知识解题)
<gadget id="calculator">75 + 15</gadget>
<output>90</output>

<gadget id="calculator">12 / 90</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">75 * (2/15)</gadget>
<output>10</output>

<result>10</result>