C#

@

using System;
					
public class Program
{
	public static void Main()
	{
		string inputString = "A1+0001852Kg 054";
		string weightValueString = inputString.Substring(3, inputString.IndexOf("Kg") - 3);
		Console.WriteLine(weightValueString);
		double weightKg = double.Parse(weightValueString) / 1000;
		string formattedWeight = weightKg.ToString("N2");
		Console.WriteLine(formattedWeight);
	}
}

0001852
1.85

private static void RestartWithRunAs(ProcessStartInfo psi) {
  psi.UseShellExecute = true;
  psi.ErrorDialog = true;
  psi.Verb = "runas";
  try {
    Process.Start(psi);
  } catch (System.ComponentModel.Win32Exception exc) {
    // Accept cancelled by user as a valid action
    const Int32 CancelledByUser = 1223;
    if (exc.NativeErrorCode != CancelledByUser) {
      // MessageBox.Show(exc.ToString(), "Restart failure");
      throw;
    }
  }
}