Master Wang needs to process 500 parts, and has already processed 312 parts. If the remaining parts are processed 8 parts a day, how many days will it take to finish processing?
王师傅要加工500个零件，已经加工了312个，剩下的如果每天加工8个，还需要多少天能加工完？
<gadget id="calculator">500 - 312</gadget>
<output>188</output>

<gadget id="calculator">188 / 8</gadget>
<output>47/2 = around 23.5</output>

<result>47/2 = around 23.5</result>