A typist needs to type a 14,400-word manuscript, which is planned to be completed in 90 minutes. A few minutes less than planned thanks to increased typing speed of 200 words per minute?
一个打字员要打14400字的文稿，计划用90分钟完成．由于提高了打字速度，每分钟可打200字，实际比计划少用几分钟？
<gadget id="calculator">14_400 / 200</gadget>
<output>72</output>

<gadget id="calculator">90 - 72</gadget>
<output>18</output>

<result>18</result>