def setup
  background(220)
  v = createVector(1, 2, 3)
  v.mult(2)
  text(v.toString, 10, 30, 60)
end

def setup
  background(220)
  v0 = createVector(1, 2, 3)
  v1 = createVector(2, 3, 4)
  v0.mult(v1)
  text(v0.toString, 10, 30, 70)
end

def setup
  background(220)
  v0 = createVector(1, 2, 3)
  arr = [2, 3, 4]
  v0.mult(arr)
  text(v0.toString, 10, 30, 70)
end