Create a lottery website

Remote work for a website builder. You need to create a lottery site according to the following principle: the user replenishes the balance, enters the game, indicates a number from 1 to a million and a margin of error from 10 to 10,000 and expects a draw, the draw begins only after 100 people make bets and then randomly generated a number, all who did not guess - lose, all who guessed - get their bet back plus 85% of the lost amount according to the corresponding formulas is distributed among the winners.

The design should be simple, game-like and necessarily with an adaptive version.

Payment systems - Peer, Perfectmonium, Bitcoin, Litecoin, Ethereum. The balance in the single currency is dollars. Payments can be ordered on the same payment systems. Replenishment should be fully automatic, the conclusions are exclusively manual - lists for payments should be generated according to the specified template.