Xiao Ming typed an article into the computer. He could type 60 characters per minute on average, and he could finish typing in 15 minutes. Dad typed 75 characters per minute. If Dad typed this article, how many minutes would it take?
小明在电脑里输入一篇文章，他平均每分钟可打60个字，15分钟能打完，爸爸每分钟打75个字，这篇文章如果由爸爸来输入，需要几分钟？
<gadget id="calculator">15 / 75</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">60 * (1/5)</gadget>
<output>12</output>

<result>12</result>