At 8 o'clock in the morning, when Wang Li went out, she saw that the hour and minute hands of the clock on the wall coincided. When she returned home at 2 o'clock in the afternoon, she found that the direction of the hour and minute hands was exactly opposite, forming a straight line. How much time did Wang Li pass from going out to coming home?
早晨8点多钟，王丽出门时看见墙上时钟的时针与分针恰好重合，下午2点多钟回家时，发现时针与分针方向恰好相反，形成一条直线．王丽从出门到回家经过的时间是多少．
<result>6</result>