Help my dog get chemo and recover from cancer!

My dog, Name, is a former stray I found on the streets of Ciudad Jimenez, in Chihuahua, Mexico. He has been the light of my life but I knew from the first day I found him that something was wrong. He had strange breathing and mass bleeding from his male part. Later on, he developed a bump in his nose, which was diagnosed as a fungal infection. After much suspicion that it was something far worse, I went through a boatload of hoops and hurdles to get him diagnosed. Before I even got him to his first scheduled oncologist visit, his tumor ruptured and I rushed him to the ER, as he had puss and blood oozing from the side of his face. He got diagnosed with a transmissible venereal tumor, aka TVT, which oddly enough is an STD cancer! The good news? The prognosis is good with this cancer and after chemotherapy treatment, he is most likely expected to be cancer free. The bad news? Chemo is an arm and a leg, and I signed up for insurance too late so they can't help really. At two and a half years old, Name has a full life to live. I will make sure he gets the care he needs regardless, but I don't have that cash in my bank account and could use help to make sure he is fully healed and well. Each chemo treatment is about $6-700, about once a week.