Correct all grammar problems in the following text
According to the investigation, the majority of the shops are in two areas; Firstly the puerto shopping center, it is allocated in Puerto Marina, and the offers of the shops is majority fashion, coffee shops and pubs.
According to the investigation, the majority of the shops are in two areas; Firstly, the Puerto shopping center, is located in Puerto Marina, and the shops on offer are mainly fashion, coffee shops, and pubs.