Consider living conditions in America.Even though you earn $6000 a month,equal to 4.2 Lakh INR,the rent in main cities in America is minimum of $1000 for a 400 sq.ft studio apartment.Everyday groceries will be around $20...And along with other expenses you'll be done with 50-60% of the money..Check living conditions in American Cities,you'll get an idea about that.
Gasoline is cheap in America..
Don't convert USD to INR for living in America.