Lifespan vs Seasons...How Many Years Will Your Sim Live?

So in other words, for a sim dying of old age as an elder.. Long life span medium seasons is most realistic. But mine never seem to get through all of the seasons 96 times and that's how I play. How are you doing the math?

I'm only getting 6 years lol. (14 days *4 seasons =56 days a year...

336/56=6 years..). I def could be doing something wrong though... Have barely slept lately lol