He just let me in on how much he makes monthly and it’s about $16,000 usd a month. I’m doing at least 50% if not more work than him, and I’m making around $2,900 a month? How do I go about asking for a raise? I know he doesn’t have anyone to replace me and I know that I’m worth at least $4000 a month. I don’t know how to go about asking him.. any advice?