Help Susana replace the rear axle and return to work

I make my living with my motorbike. 10 weeks ago the rear axle failed, and the mechanic says the repair will cost $700. 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 family of five. Before the breakdown I worked ten hours a day, six days a week. I have been offered extra shifts for the next six months if I can just get the vehicle working. I have a written estimate from a certified mechanic and will upload it here. All money will go toward the parts and labor on the estimate, with a small amount for road tax and insurance renewal. Where the $700 goes: • rear axle replacement (parts): $290 • Labor charges: $100 • Road tax and insurance renewal: $240 • Towing and inspection: $70 Thanks for reading all this.