A garment factory plans to produce 3,000 sets of garments in October, 45% of the plan is completed in the first ten days, and 2/5 of the plan is completed in the middle ten days. How many sets can be produced to complete the planned task?
某服装厂10月计划制作服装3000套，上旬完成计划的45%，中旬完成计划的(2/5)，再生产多少套才能完成计划的任务？
<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">3_000 * (9/20)</gadget>
<output>1_350</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3_000 * (2/5)</gadget>
<output>1_200</output>

<gadget id="calculator">3_000 - 1_350 - 1_200</gadget>
<output>450</output>

<result>450</result>