Sister Qisi started doing her homework between 7:00 and 8:00 p.m. When the hour and minute hands on the clock face were in a straight line, when she finished her homework, she found that the hour and minute hands coincided. How many minutes did Qisi spend on her homework?
奇思妹妹晚上7点与8点之间开始做作业，当时钟面上时针与分针恰好成一直线，当她完成作业时，发现时针与分针刚好重合，奇思妹妹花了几分钟做作业？
<gadget id="calculator">6 - 0.5</gadget>
<output>5.5</output>

<gadget id="calculator">180 / 5.5</gadget>
<output>32.727273</output>

<result>32.727273</result>