Can I hire you, daddy?

A 10 year old boy approached his dad from work. He asked him how much money he earns everyday. He said $1000.
The boy asked him if he can borrow $400. His dad was shocked and scolded him instead.
The boy went to his room and cried.
His dad realized that he overreacted and decided to give his son what he asked.
The boy stopped crying, took the money from his dad and took $ 1600 bills out of his piggy bank and said: "Now I have $2000, can I have you for two days DADDY?"