The workshop needs to process 760 parts, 5 days of work in the first week, and 80 parts are processed every day. In the second week, I plan to process 90 pieces per day. How many days will it take to complete the processing task?
车间要加工760个零件，第一周工作5天，每天加工80个．第二周准备每天加工90个，还要几天才能完成加工任务？
<gadget id="calculator">5 * 80</gadget>
<output>400</output>

<gadget id="calculator">760 - 400</gadget>
<output>360</output>

<gadget id="calculator">360 / 90</gadget>
<output>4</output>

<result>4</result>