In order to participate in the speech contest, Xiaofang prepared a speech of about 900 words. She tried it and it took 5 minutes. The teacher requires everyone to give a 10-minute speech. How many words does Xiaofang need to prepare for the speech?
为了参加演讲比赛，小芳准备了一篇大约900字的演讲稿，她试了试需要5分钟．老师要求每人演讲10分钟，小芳需要准备大约多少字的演讲稿？
<gadget id="calculator">900 / 5</gadget>
<output>180</output>

<gadget id="calculator">180 * 10</gadget>
<output>1_800</output>

<result>1_800</result>