The garment factory needs to produce 6,500 suits, and has been producing them for 15 days, with an average of 200 suits per day. The rest will produce 50 more sets per day, how many more days will it take to complete the production task?
服装厂要生产6500套西服，已经生产了15天，平均每天生产200套．余下的每天多生产50套，还要多少天能完成生产任务？
<gadget id="calculator">200 * 15</gadget>
<output>3_000</output>

<gadget id="calculator">6_500 - 3_000</gadget>
<output>3_500</output>

<gadget id="calculator">200 + 50</gadget>
<output>250</output>

<gadget id="calculator">3_500 / 250</gadget>
<output>14</output>

<result>14</result>