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Arabic numbers Converter - Roman

Calculator converts numbers to roman Arabic or Roman to Arabic vice versa. The maximum value that the calculator correctly parse the number 3999.              
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Calculator based on the entered coefficients calculated roots of a quadratic equation.              
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Calculator to the data give an assessment of the level of consciousness by the Glasgow Coma Scale.      
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Map Scale Converter

Calculator allows to determine the actual distance corresponding to the distance on the map with the specified scale. If the map at 1:500,000 scale the input field, enter the value 500000.  
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Calculator to calculate the total length of service after the date of employment or dismissal.