The garment factory processes 600 garments in 15 days. How many days will it take to process 1800 pieces of clothing?
服装厂15天加工600件服装．如果要加工1800件衣服，需要多少天？
<gadget id="calculator">600 / 15</gadget>
<output>40</output>

<gadget id="calculator">1_800 / 40</gadget>
<output>45</output>

<result>45</result>