So I'll be flying SQ for the first time in November. Obviously I'm interested to see how many miles I will earn towards my UA MileagePlus account! I've been trying to figure out how many miles I will actually get but not really sure how to figure it out. Here are my flights (and just for reference, I have a high enough class to get 100% of the miles):

SQ25 JFK-SIN (stop in FRA)
SQ972 SIN-BKK

SQ973 BKK-SIN
SQ26 SIN-JFK (stop in FRA)

When I try to use the mileage calculator - I get results all over the map. Should I be checking each leg individually? And should I be doing JFK-FRA and the FRA-SIN? Or just JFK-SIN?

Never actually been on a flight that had a "connection" that was the same flight! Thanks!