The toy factory needs to produce 300 toys, 28 of which have already been produced, and the remaining 4 are produced every day. How many days will it take to finish the production?
玩具厂要生产300件玩具，已经生产了28件，剩下的每天生产4件，还要生产多少天才能做完？
<gadget id="calculator">300 - 28</gadget>
<output>272</output>

<gadget id="calculator">272 / 4</gadget>
<output>68</output>

<result>68</result>