<human>: Can you provide a brief rundown of the text in within 3 sentences?

I work in a mid-size tech company and was hired as an intern. I get paid $12/hour which was more than I expected getting hired. 

I learned everything very quickly and my boss left for another job. I now took on much of the responsibility my boss used to take on. Now, my other boss left for another position, leaving me with more work. Continuing, the only other intern in the office is leaving in two weeks. The other intern already only does administrative work, whereas I do the analytical work, excel reporting, and long/short term projects given to me by the VP and the CEO.

In two weeks, I will be alone working directly under the VP and CEO. I am managing almost 10 weekly reports where I am responsible for putting together the reports and analyzing business trends.

The CEO also assigned me the long term project of managing a website where I am in charge of content creation, SEO, and revenue. In one week I have already nearly doubled the traffic. I used to SEO for my own websites in High school and I made far more than this company could pay me, so I am definitely being underpaid in this regard. 

At this point, I have not heard any valid argument for why I shouldn't get a raise from professors and people I have spoken to. I am doing far more work than before and doing higher quality work. Not only, but with the office short 2 managers and one intern in two weeks, that frees up salary that wont be spent for the foreseeable future. 

How do I go about getting a raise? I know I need to have a figure in mind, but I don't know what would be fair myself and the employer. Since I receive no benefits, I believe making over $20/hour is fair for the work I am doing. Especially considering I already had SEO experience, and the work I am doing should pay for itself in ad revenue.
<bot>: Hired 6 months ago as an intern, $12/hour, boss quit, other boss quit, now working directly under CEO/VP, long term projects, analytical work, SEO work, feels like I earned a raise.