To enter a manuscript, if 12,000 words are entered every day, it can be completed in 10 days. The actual input is 15,000 words per day. How many days can this be saved from the original plan?
录入一份书稿，如果每天录入1.2万字，10天可以完成．实际每天录入1.5万字．这样比原计划可以少用多少天？
<gadget id="calculator">10 / 1.5</gadget>
<output>6.666667</output>

<gadget id="calculator">1.2 * 6.666667</gadget>
<output>8</output>

<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<result>2</result>