Welcome! In this lesson, we will explore the practical applications of string operations and type conversions using Kotlin. These concepts are essential and are utilized in numerous programming scenarios. We'll focus on a real-world example: time parsing. Have you ever wondered how to add a certain number of seconds to a specific time? By the end of today's session, you'll have the ability to calculate this using Kotlin. Let's get started!

Imagine this: You receive a time formatted as a string in HH:MM:SS, where HH, MM, and SS denote the hour, minute, and second, respectively. You are also given an integer representing a certain number of seconds. Your task is to calculate the new time after adding the provided seconds, then output the result in the HH:MM:SS format.

For example, if the input time is 05:10:30 and the number of seconds to add is 123, the output should be 05:12:33 since 123 seconds translate to 2 minutes and seconds.