using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		var test = $"6/4/2020,test,test,testJR,\"111 test DRIVE, city, st\",city,st,11111,test@gmail.com,11111,11111,\"$370,000.00 \",\"$500,000.00 \",Single Family Residence,\"$370,000.00 \",4.25%,Fixed,74.00%,Rate and Term,0.00%,$0.00 ,Good,No";
    	var regex = new Regex(@"""\s*\$\d+(?:,\d+)*(?:\.\d+)?\s*""|(""[^""]*"")");
    	test = regex.Replace(test, m => m.Groups[1].Success ? m.Groups[1].Value.Replace(',', ' ') : m.Value);
        Console.WriteLine(test);
	}
}