Consider a concrete example: say your bank account is overdrawn by £200. That is, you have a balance of -200. Suppose that it doubles, that is to say, it gets multiplied by 2. Your new balance is -400. If -200*2 were equal to 400, rather than -400, it would correspond to doubling your overdraft in effect turning it into a credit.
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Consider a concrete example: say your bank account is overdrawn by £200. That is, you have a balance of -200. Suppose that it doubles, that is to say, it gets multiplied by 2. Your new balance is -400. If -200*2 were equal to 400, rather than -400, it would correspond to doubling your overdraft in effect turning it into a credit.
because it just does(: