A TV factory plans to produce 1,500 sets in 15 days. After 5 days of production, the production efficiency has increased by 25% due to the introduction of a new production line. How many days earlier will the TV factory complete the plan?
某电视机厂计划15天生产1500台，结果生产5天后，由于引进新的生产线生产效率提高25%，则这个电视机厂会提前多少天完成计划．
<gadget id="calculator">1_500 / 15</gadget>
<output>100</output>

<gadget id="calculator">100 * 5</gadget>
<output>500</output>

<gadget id="calculator">1_500 - 500</gadget>
<output>1_000</output>

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

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">100 * (5/4)</gadget>
<output>125</output>

<gadget id="calculator">1_000 / 125</gadget>
<output>8</output>

<gadget id="calculator">15 - 5 - 8</gadget>
<output>2</output>

<result>2</result>