Help Sônia replace the transmission and return to work

I make my living with my delivery van. 4 weeks ago the transmission failed, and the mechanic says the repair will cost $500. Without the vehicle I earn nothing. I have been borrowing from friends to pay rent, and now I have run out of people to ask. I support my two daughters and my mother. Before the breakdown I worked nine hours a day, six days a week. I have been offered extra shifts for the next three months if I can just get the vehicle working. I have a written estimate from a certified mechanic and will upload it here. I'll pay the mechanic directly and show you the repaired vehicle in an update. Where the $500 goes: • transmission replacement (parts): $270 • Labor charges: $110 • Road tax and insurance renewal: $85 • Towing and inspection: $35 Thank you so much.