Welcome to another exciting session! In today's lesson, we delve into a unique coding challenge using Go. We will traverse the digits of a number using a for loop under specific conditions. This exercise will help you sharpen your skills in working with Go loops and conditional statements, both of which are fundamental building blocks of programming in Go. Are you ready to get started?

Our mission today is intriguing! We need to create a function that calculates the sum of even-numbered digits from a given integer. We'll avoid converting the integer to a string at any point. For example, given the number 4625, our function should return 12, which is the sum of the even digits 4, 6, and 2.

The integer n will always be positive and within the range of 1 to $10^8$. Are you prepared for this challenge? Fantastic! Let's begin our journey into coding with !