Google Sheet Not Multiplying in IF Formula

I am trying to calculate a price based on rates. If the number is $20,000 or below, there is a flat rate of $700. If the number is between 20,001.01 and $50,000, the rate is 3.5% of the number. The rates continue to lower as the numbers go up. I can get Google Sheets to populate the box with $700 if it is below $20,000 but I can't seem to make it do the multiplication for me. The cell just shows C4*.035 cell image

I want it to multiply the number shown in the C4 square by the percentage listed. Here is the code as it currently sits:

=if(AND(C4<=20000),"700",IF(AND(C4>=20000.01,C4<=50000),"C4*.035", IF(AND(C4>=50000.01,C4<=100000),"C4*.0325", IF(AND(C4>=100000.01),"C4*.03"))))

Note, I know nothing about coding so I apologize if it is sloppy or doesn't make sense. I tried to copy and format based on an example that was semi similar to mine.