UnitExample.scala

  val mass: Mass[Double] = 4.0 kg
  val length: Length[Int] = 5 m
  val time: Time[Int] = 1 s
  val temperature: Temperature[BigDecimal] = BigDecimal("22.22") k
  val speed = length / time
  val area = length * length
  val volume: Volume[Int] = (23 m) * (1 m) * (1 m)
  val accel = (10.0 m) / ((1.0 s) * (1.0 s))