To enter a manuscript, if you enter 1200 words a day, it can be completed in 10 days. The actual input is 1500 words per day. This can save a few days from the original plan?
录入一份书稿，如果每天录入1200个字，10天可以完成．实际每天录入1500个字．这样比原计划可以少用几天？
<gadget id="calculator">10 / 1_500</gadget>
<output>1/150 = around 0.006667</output>

<gadget id="calculator">1_200 * (1/150)</gadget>
<output>8</output>

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

<result>2</result>