Petro and Diesel ability to stay with their human kids

Hi my name is Kaitlin. I am asking for help for my two husky/malamute mixes. These boys were rescues. I have spent the last 5 years taking care of these boys and trying to show them the first 4 year of their life is not how dogs should live. Unfortunately in the last two, life changed drastically for me. I am having a hard time affording their needs. Petro needs a surgery to take tumors out of his mouth and check for cancer. I am now a single mom and I cannot afford the surgery. I am a very knowledgeable husky owner and I also know these boys HAVE to stay together. No rescue will help me, and I simply cannot afford the best for them on my own. I need help to help Petro have a more full life and able to eat his dog food without pain and a little help affording their food and walks that they need often because we are in an apartment. Any bit helps so much for these sweet boys.