I am dividing the elapsed time in ms to MINUTE_TO_MS_CONVERSION = 60000 to convert the value back to minutes to be reported out. This #define is also used to convert minutes to ms by adding the value to this #define.
in Qml codes when needs to have private members since we don't have that concept, a QtObject item with id "_private" will be created. "_" is for private and private is to emphasis on the private since there is no actual private keyword in Qt<6 available. And there should be a unique one in each context.
