。
It took me more than a week to assemble the model ship.
Literal
Model-ship [object-を] assemble [to-のに] I [topic-は] one-week more-than took.
~のに ('for the purpose of, to') is one use of the versatile のに — here the purposive 'in order to X.' Attached to the dictionary form of a verb, it marks the action for which a resource (time, money, effort) is required. Not to be confused with the concessive ~のに ('although'). 以上 ('more than, and above') is a suffix attached to numbers.