The master can make 4515 parts in 7 days, and the apprentice can make 1155 parts in a week. How many more parts can the master make than the apprentice every day?
师傅7天能做零件4515个，徒弟一周能做零件1155个，师傅平均每天比徒弟多做零件多少个？
<gadget id="calculator">4_515 / 7</gadget>
<output>645</output>

<gadget id="calculator">1_155 / 7</gadget>
<output>165</output>

<gadget id="calculator">645 - 165</gadget>
<output>480</output>

<result>480</result>