Two workers, A and B, work together to process a batch of parts, and the process is completed in 5 days. It is known that worker A processes 30 parts per day, and worker B processes 25 parts per day. How many parts are there in total?
甲乙两个工人共同加工一批零件，5天完成，已知甲工人每天加工30个零件，乙工人每天加工25个零件，这批零件共有多少个？
<gadget id="calculator">30 + 25</gadget>
<output>55</output>

<gadget id="calculator">55 * 5</gadget>
<output>275</output>

<result>275</result>