How do you lose 181.8 lbs in 3 days?

That is impossible, no matter what method you use. Three years is a more realistic schedule for that.

The most important thing is avoiding junk foods and sweetened drinks such as soda. Try to avoid refined flour and pasta, processed foods, fried foods, and fatty cuts of meat. Cut down on added sugar and added salt. Even for people who are not trying to lose weight, it is recommended to have no more than about 6 teaspoons of sugar per day (and many processed foods contain sugar, corn syrup or the like).