phpnewone Posted November 22, 2010 Share Posted November 22, 2010 What in the world am I doing wrong? $percentFormat is 0.093. $totalExpenses is 1,113,451.00. $numAdminCost = ($percentFormat * $totalExpenses); $numAdminCost ends up being 0.093. I've googled this and tried some different solutions but am not having any luck. I'm sure there is a bonehead error somewhere. Please and thanks. Link to comment https://forums.phpfreaks.com/topic/219475-multiplication/ Share on other sites More sharing options...
PFMaBiSmAd Posted November 22, 2010 Share Posted November 22, 2010 The thousands comma separators are a human convention to make numbers easier to read and have no meaning to a computer when used in a number. Well actually they do have some meaning, they are a stop-character, i.e. a character that is not a numeric digit or a decimal point. A computer sees your example as .093 * 1(stop-character) which equals .093 You will need to remove any commas from numbers if you want a computer to operate on that number. Link to comment https://forums.phpfreaks.com/topic/219475-multiplication/#findComment-1137974 Share on other sites More sharing options...
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