$478 by using the provided formula ...
Explanation : income = $523 , expense = $ 45 , profit =523-45= 478
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hope this helps
Because 0.09 is ten times as big as 0.009
So basiclly you will end up getting the wrong answer. For example 234+23.
If you lined it up incorrectly you might get 464. It is actually 257. This is wy you should line it up correctly.
~JZ
Hope it helps! Good Luck!
