How to apply for a loan?

Ok so I tried to research this online but I would like to get opinions from regular people who may have once been in my position. My monthly income is as follows: I make $803 from SSI, $2,860 from a full time job, I make a guaranteed $2,000+ commission over a 9 day/126 hour period selling fireworks, and then $500/month over a 3 month period. It may be per week I’m not sure. Can anyone give me an idea of how to calculate this into an annual income? I did everything the internet said and it told me I make $3,171/month and $38,052/year.