It's similar to soccer wagers, if the total lands on 5 I would win half the wager and push the other, hence "5 and 5.5".
Ytd 22-21 +15.55
Leafs-1 +124 (5 units)
Bruins-1 +166 (5 units)
Predators +140 (5 units)
Lightning +122 (5 units)
Kings-1 +110 (5 units)