问一道介词+关系代词结构的定语从句

问题描述:

问一道介词+关系代词结构的定语从句
The journey around the world took the old sailor nine months,of which the sailing time was 226 days.
定语从句部分还原是不死?the sailing time of the journey was 226 days.which代the journey?
如果是这样那介词摆在从句里面是The journey around the world took the old sailor nine months,which the sailing time of was 226 days.
感觉不大对头啊?

这里是说在九个月中的226天是航行的天数,所以of which 是226days of nine months