Improve the math a bit
Improve the math a bit

remspoor/FastLED,corbinstreehouse/FastLED,FastLED/FastLED,PaulStoffregen/FastLED,kcouck/FastLED,PaulStoffregen/FastLED,corbinstreehouse/FastLED,NicoHood/FastLED,eshkrab/FastLED-esp32,tullo-x86/FastLED,felixLam/FastLED,NicoHood/FastLED,neographophobic/FastLED,FastLED/FastLED,wilhelmryan/FastLED,PaulStoffregen/FastLED,eshkrab/FastLED-esp32,tullo-x86/FastLED,FastLED/FastLED,wilhelmryan/FastLED,remspoor/FastLED,felixLam/FastLED,neographophobic/FastLED,kcouck/FastLED,FastLED/FastLED