/**
 * Calculate the Return on Investment (ROI) given revenue and cost.
 */
fun calculateRoi(revenue: Double, cost: Double): Any {

    if (cost == 0.0) {
        return "Infinity"
    }
    return revenue / cost
}
/**
 * Calculate the Return on Investment (ROI) given revenue and cost.
 */
fun calculateRoi(revenue: Double, cost: Double): Any {
/**
 * Calculate the Return on Investment (ROI) given revenue and cost.
 */
fun calculateRoi(revenue: Double, cost: Double): Any {

    if (cost == 0.0) {
        return "Infinity"
    }
    return revenue / cost
}