Two apache servers on same machine with same port

I have a self hosted apache website with php and mysql on my Raspberry Pi. Now I need to make another one for my new domain but I have no other computer to run the server on. Is there a way for me to run the server on the same machine, with the same port? If not, how may I alter the port so there is no need for me to type I need it to be

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Author: James B. Reese