func factors(number: Double) -> [Double] {
    var result = [Double]()
    var divisor = 0.1

    let temporaryIncreasedNumber = Int(number) * 10

        while number > divisor {
            let theNewDivisor = divisor * 10
            print("(divisor) * (10) = (theNewDivisor) for (divisor), (temporaryIncreasedNumber) % (Int(theNewDivisor)) is (temporaryIncreasedNumber % Int(theNewDivisor))")
            if temporaryIncreasedNumber % Int(theNewDivisor)  == 0 {
                //print ("dividing (temporaryIncreasedNumber) by (theNewDivisor) for (divisor)")
                result.append(divisor);
            }

            divisor += 0.1
        }
    return result
}

factors(number: 20.0))

1.1 * 10 = 11.0 for 1.1, 200 % 10 is 0

let myX = 20.0
let myY = 1.1
let myCalc = Int(myX * 10.0) % Int(myY * 10.0)
let myCalc2 = 200 % 11

func factors(number: Double) -> [Double] {
    var result = [Double]()
    var divisor = 0.1

        while number > divisor {
            let whole = (number/divisor).rounded(.towardZero)
            print ("reminder of (number) by (divisor) = ((number/divisor) - whole)")
            if (number/divisor) - whole  == 0.0 {
                result.append(divisor);
            }

            divisor = divisor + 0.1
        }
    return result
}

factors(number: 20.0)

reminder of 20.0 by 0.8 = 3.5527136788005e-15

let test = (20.0/0.8) - (20.0/0.8).rounded(.towardZero)