The school needs to paint the classrooms. The Hualin service team is going to send 6 painters to complete the painting task in 6 hours. Because another construction site is not completed in time, the service team will send 4 painters to paint the classrooms. How many hours will it actually take to complete the task? ?
学校要粉刷教室，华林服务队准备派出6名粉刷工，6小时完成粉刷任务，由于另一施工点未及时完工，服务队值派出4名粉刷工来粉刷教室，实际用多少小时才能完成任务？
<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">1 / 36</gadget>
<output>1/36 = around 0.027778</output>

<gadget id="calculator">(1/36) * 4</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 / (1/9)</gadget>
<output>9</output>

<result>9</result>