121.345°÷6+32°28′36″=(121°+0.345°)×1/6+32°28′36″=[121°+(0.345×60)′ ]×1/6+32°28′36″=(121°+20.7′)×1/6+32°28′36″=[121°+20′+(0.7×60)″]×1/6+32°28′36″=(121°+20′+42″)×1/6+...