Temperature Sensor Conversion in Logo


I am using the Grove Sensor Set V3.7. I am creating a web app that would read the values coming in from the temperature sensor via a gogoboard. It seems that the value that I get from the temperature sensor is in the 600-700 range. I would like to convert this to degrees (Celsius and Fahrenheit) but I cannot seem to find a conversion formula. The gogo board runs Logo code so I would need a conversion that would work in Logo.