Answer:
If we knew that, we would all be millionaires.
Work for 30 years and only spend half of what you make.
Build a water Company;
Loan 4 million and you can have enough equipment for 750,000 litres a day. Also You will have enough to build it all have a wage. It will cost you nothing for three years! If you suply a whole town.
Or, Become a drug dealer (Illegal)
Or, invent a brilliant idea
Or, get a job at rolls Royce and save 90% of it all
Or, become an assasin
Or, By a buisness that is good at the start, and buy it, and make it bigger.
Or, be a vice presedent of a major bank like Lloyds TSB
Or, Rob a bank
Or, Rip people off on computers that don't work
Or, Ask Jeeves
Or, Google it
Or, Beg for it
Or, Ask my mate kez
Or, do a rubish act on a national talent show and win loads of money from simon cowell