Jessica has just won a load of money playing Cheat! She puts 1/5 of her winnings in the National Bank, and 1/2 of her winnings she invests into shares.
After those investments Jessica realises she still has quite a lot left. She then goes to the shop and spends 1/10 of her winnings on chocolate eggs! At the end of the day she goes home and puts her remaining $500 in her mattress.
How much did Jessica originally win?
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