I tried my best to get the tax in the worst way possible.

calculate-tax-shitty-example.cs

public calc {
  public double tax(double[] l, int year, double tax, string type) {
    int l1 = l.Length, convT = (int)(tax * 100);
    double s;
    
    if(l1) {for(int i = 0; i = l.Length; ++i) {s+= (l[i] * convT)/100;}}
    if(type == "marketing") {
      sendTo("marketing", year);
     } else if (type = "development") {
      sendTo("development", year);
     } else if (type = "sales") {
      sendTo("sales", year);
     } else if(type = "finance") {
      sendTo("finance", year);
     }
    
    return s;
  }
}