Xiaofang typed an article, if she typed 75 words per minute, she could finish typing in 18 minutes. Now because of time constraints, Xiaofang decided to type 80 characters per minute on average. How many minutes can she finish typing?
小芳打一篇文章，如果每分钟打75个字，18分钟可以打完．现在因为时间紧急，小芳决定平均每分钟打80个字，多少分钟就能打完？
<gadget id="calculator">18 / 80</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">75 * (9/40)</gadget>
<output>135/8 = around 16.875</output>

<result>135/8 = around 16.875</result>