Xiaofang typed 960 words in 15 minutes. At this speed, it took her exactly one hour to type a manuscript. How many words are there in this manuscript?
小芳15分钟打字960个．照这样的速度，她打一篇稿件正好用了l小时，这篇稿件有多少个字？
<gadget id="calculator">960 / 15</gadget>
<output>64</output>

<gadget id="calculator">64 * 60</gadget>
<output>3_840</output>

<result>3_840</result>