levelForXp : Basics.Int -> Basics.Int
levelForXp 10
--> 1
levelForXp 82
--> 1
levelForXp 83
--> 2
levelForXp 84
--> 2
levelForXp 200000000
--> 120
levelForXpElite : Basics.Int -> Basics.Int
xpRemaining : Basics.Int -> Maybe Basics.Int
xpRemaining 10
--> Just 73
xpRemaining 82
--> Just 1
xpRemaining 83
--> Just 91
xpRemaining (104 * 10^6)
--> Just 273167
xpRemaining (105 * 10^6)
--> Nothing
xpRemainingElite : Basics.Int -> Maybe Basics.Int