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You can configure the currency symbol, position, and if it’s separated by a space from the price.
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If you want to configure the other options, they start with “Round price” which automatically rounds prices to the nearest whole number, you’ll likely want to turn this option off. Select your local or preferred currency from the “Convert to” drop-down list. The most important setting to configure is the top one, “Convert to”. When you first install the Add-on it will automatically open the settings so you can configure conversions to your preference.
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To add SCs Currency Converter to Firefox, click on the “Add to Firefox” button on the Add-on store page, then click “Add” when asked for confirmation. How to convert currencies in Firefox automatically
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