Two workers, A and B, produce parts. Worker A produces 4515 parts in 7 days, and worker B produces 1155 parts in a week. On average, how many more parts does worker A produce per day than worker B?
甲乙两个工人生产零件，甲工人7天生产了4515个零件，乙工人一周生产了1155个零件．甲工人平均每天比乙工人多生产多少个零件？
<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>