The garment factory needs to produce 7,500 sets of children's clothing, and 1,800 sets have been completed in 6 days. According to this progress, how many days will it take to complete all the tasks? (Solve with ratio)
服装厂要生产7500套儿童服装，6天已经完成了1800套，按这样的进度，全部完成任务需要多少天？(用比例解)
<gadget id="calculator">7_500 - 1_800</gadget>
<output>5_700</output>

<gadget id="calculator">1_800 / 6</gadget>
<output>300</output>

<gadget id="calculator">5_700 / 300</gadget>
<output>19</output>

<result>19</result>