A project originally planned for 15 people to work 8 hours a day, and the task can be completed in 10 days. After 3 days of starting work, 3 people are transferred away. If the task is completed within the original time, how many hours should the remaining people work every day?
一项工程原计划15人每天工作8小时，10天可以完成任务，开始工作3天后，调走3人，如在原定时间内完成任务，那么剩下的人每天应工作多少小时．
<gadget id="calculator">15 * 8 * 10</gadget>
<output>1_200</output>

<gadget id="calculator">15 * 8 * 3</gadget>
<output>360</output>

<gadget id="calculator">1_200 - 360</gadget>
<output>840</output>

<gadget id="calculator">15 - 3</gadget>
<output>12</output>

<gadget id="calculator">10 - 3</gadget>
<output>7</output>

<gadget id="calculator">840 / 12 / 7</gadget>
<output>10</output>

<result>10</result>