An assembly line that assembles certain machines at a constant speed assembles 3,500 machines in 28 days. According to this calculation, how many days will it take to assemble another 1,750 machines?
一个匀速组装某种机器的流水线28天组装机器3500台，照这样计算，再组装1750台，还需要几天？
<gadget id="calculator">3_500 / 28</gadget>
<output>125</output>

<gadget id="calculator">1_750 / 125</gadget>
<output>14</output>

<result>14</result>