The factory produces half a million coats every years 90%____ are sold abroad.横线处为什么填 of which?

问题描述:

The factory produces half a million coats every years 90%____ are sold abroad.
横线处为什么填 of which?

这其中的90%
能理解吗

which指代的是前面的half a million coats
90% of which 的意思就是90% of half a million coats(某物中的百分之多少)