Formal letter

Dear Sir Robert,
I am Richard, i am 24 years old and i have two sons. My wife is dead and i need a job urgently my sons are hungry so i am offering myself to be your servant.
If you accept, my salary will be $50 a month. I will do alot of things for you but at night i wil be with my sons. At 5am, i will be in your house waiting for you
I would like that you accept because my sons and i are dying, my adress is 731,Rosales Street, Adrogue
Gretting Richard