Sentences do not have to be in exact years , part years ,months , even days are common. 19 1/2 years would have been the actual sentence, any time on remand would be taken off after the full sentence had been announced.
Jeffery Archer for example was sentenced to 4 years and 1 day, this ment he could not get automatic release at the half way point. That is only for sentences of 4 years and under.