A machine factory plans to make 5,250 parts, and made 525 parts every day in the first 4 days. How many days will it take to make the remaining parts?
某机器厂计划做5,250个零件，前4天每天做了525个，剩下的零件还要做多少天？
<gadget id="calculator">4 * 525</gadget>
<output>2_100</output>

<gadget id="calculator">5_250 - 2_100</gadget>
<output>3_150</output>

<gadget id="calculator">3_150 / 525</gadget>
<output>6</output>

<result>6</result>