Teacher Zhang typed 480 characters in 15 minutes. At this speed, how many minutes will it take to finish typing an article with 1440 characters?
张老师15分打了480个字，照这样的速度，一篇有1440个字的文章，需要几分钟打完？
<gadget id="calculator">480 / 15</gadget>
<output>32</output>

<gadget id="calculator">1_440 / 32</gadget>
<output>45</output>

<result>45</result>