Xiaohong and Xiaoli live in the same unit in the same building. Xiaohong lives on the fourth floor, and Xiaoli lives on the seventh floor. This time they both go home at the same speed. Xiaohong spent 0.9 points. Xiaoli should How many seconds?
小红和小丽住在同一幢楼的同一个单元，小红家住在四楼，小丽家住在七楼，这一次她们俩以同样的速度回家，小红用了0.9分，小丽应该用多少秒？
<result>108</result>