I write articles for a website for serious investors. These articles are usually between 500-1500 words. I currently have four articles that need editing. I also need someone to help me edit future articles. I can't give an exact number but I plan to write about two articles a week. You need to have a basic understanding of finance to be able to understand and proofread my articles.
These jobs should not take long. If you understand finance it should take about 10-20 minutes to proofread the article.