A workshop processed a batch of parts, which was originally planned to be completed in 15 days. Due to the updated equipment, 160 more parts were processed every day than the original plan, and the task was completed in only 9 days. How many parts are there in this batch?
某车间加工一批零件，原计划15天完成，由于更新设备，每天比原计划多加工160个零件，只用9天就完成了任务，这批零件有多少个？
<gadget id="calculator">160 * 9</gadget>
<output>1_440</output>

<gadget id="calculator">15 - 9</gadget>
<output>6</output>

<gadget id="calculator">1_440 / 6</gadget>
<output>240</output>

<gadget id="calculator">240 * 15</gadget>
<output>3_600</output>

<result>3_600</result>