Uncle Zhang works for 5 days, processing 85 parts every day, and there are still 98 parts left unprocessed. How many parts are there in this batch?
张叔叔工作5天，每天加工零件85个，还差98个没有加工．这批零件有多少个？
<gadget id="calculator">85 * 5</gadget>
<output>425</output>

<gadget id="calculator">425 + 98</gadget>
<output>523</output>

<result>523</result>