using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?i)\b(\d+) ?m(?:m|illions?)?\b";
string substitution = @"\1000000";
string input = @"I need $ 150000000, or 150 million,1 millions, 15 Million, 15million, 15Million, 15 m, 15 M, 15m, 15M, 15 MM, 15MM, 5 thousand";
Regex regex = new Regex(pattern);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx