I'm an Indonesian native speaker and English is my second language. I can translate English into Indonesian. For short document (about 20-50 pages) I need 4-6 hours to translate from English into Indonesian including spell and grammar checking. It depends on the theme of document you provide to me. If it's life-style, language-related, civil and travel themed document it will be easier and I can work more quickly. If it's criminal, math-related, biologic, pharmacy and other heavy themed document it will take more time to me because I must doing some research before translating them.
Thanks in advance.