Master Wang plans to process 2,500 machine parts, and has been working for 6 days, processing 215 pieces per day. How many are left unprocessed?
王师傅计划加工2500个机器零件，已经工作了6天，每天加工215个．还有多少个没有加工？
<gadget id="calculator">215 * 6</gadget>
<output>1_290</output>

<gadget id="calculator">2_500 - 1_290</gadget>
<output>1_210</output>

<result>1_210</result>