The timing clock of a black-hearted boss is slower than the standard clock, and his timing clock coincides with the hour and minute hands every 72 minutes according to the standard time. The master workers have to work 8 hours a day according to this clock. He stipulated: The hourly wage within 8 hours is 4 yuan, and the overtime wage after 8 hours is twice the original hourly wage. Then, how much money was deducted by the unscrupulous boss when the master worker worked eight hours according to this clock.
某黑心老板的计时钟比标准钟慢，他的计时钟按标准时间每72分钟分针与时针重合一次．工人师傅要按照这样的计时钟每天工作8小时．他规定：8小时内的计时工资为4元，8小时外超时工资为原计时工资的2倍．那么，工人师傅按这样的计时钟工作八小时，被这个黑心老板克扣了多少元．
<gadget id="calculator">720 / 11</gadget>
<output>720/11 = around 65.454545</output>

<gadget id="calculator">8 / (720/11)</gadget>
<output>11/90 = around 0.122222</output>

<gadget id="calculator">72 * (11/90)</gadget>
<output>44/5 = around 8.8</output>

<gadget id="calculator">(44/5) - 8</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">(4/5) * 8</gadget>
<output>32/5 = around 6.4</output>

<result>32/5 = around 6.4</result>