To process the same part, Master Wang can process 68 pieces per day, Master Li can process 75 pieces per day, and Master Lin can process 70 pieces per day. Now he needs to process 200 such parts. not finished?
加工同一种零件，王师傅每天能加工68个，李师傅每天能加工75个，林师傅每天能加工70个，现在要加工200个这样的零件，选两位师傅加工1天后，至少还有多少个没有完成？
<gadget id="calculator">75 + 70</gadget>
<output>145</output>

<gadget id="calculator">200 - 145</gadget>
<output>55</output>

<result>55</result>