/**
 * This function calculates the total cost of interior design for a room given its area and cost per square meter.
 * The total cost is calculated by multiplying the area and cost per square meter.
 *
 * @param area The area of the room.
 * @param costPerSqm The cost per square meter of interior design.
 * @return The total cost of interior design for the room.
 */
fun calculateInteriorDesignCost(area: Double, costPerSqm: Double): Double {

    val totalCost = area * costPerSqm  // calculate the total cost
    return totalCost
}
/**
 * This function calculates the total cost of interior design for a room given its area and cost per square meter.
 * The total cost is calculated by multiplying the area and cost per square meter.
 *
 * @param area The area of the room.
 * @param costPerSqm The cost per square meter of interior design.
 * @return The total cost of interior design for the room.
 */
fun calculateInteriorDesignCost(area: Double, costPerSqm: Double): Double {
/**
 * This function calculates the total cost of interior design for a room given its area and cost per square meter.
 * The total cost is calculated by multiplying the area and cost per square meter.
 *
 * @param area The area of the room.
 * @param costPerSqm The cost per square meter of interior design.
 * @return The total cost of interior design for the room.
 */
fun calculateInteriorDesignCost(area: Double, costPerSqm: Double): Double {

    val totalCost = area * costPerSqm  // calculate the total cost
    return totalCost
}