Financial Calculator Code Translation Into Mathematical Formula

Hello, I can do the task in less time, and 100% accurate (Please attach the source code not an installer -or send it in a pm-) - I'm an experienced software developer specialized in desktop applications, tools, and scripts. - I write programs using .NET (C# & VB.Net) since 2013, and using classic VB6 since 2007. - Have long experience with web scraping applications, socket communications, FTP connections, mathematics & formulas, applications that manipulate files & folders, and creating mini-tools that automate tasks while working in background. - Experience with database based applications (MS-Access, SQL Server, and MySQL). - Also I have a long experience with MS-Excel (formulas & VBA macros). - Accuracy and precision is one of my principles, also one of my best advantages. - Commitment to deliver tasks in time.