A logarithm is a way of expressing how many times you need to multiply a certain number (called the base) to get another number. A natural logarithm is a logarithm with base e, where e is a special number in mathematics that is approximately equal to 2.71828.
Think of it like counting how many times you need to multiply a number by the special number e to get another number. For example, if you start with 1 and multiply it by e every day, it will take you approximately 2.718 days to get to 2.718.
So, natural logarithms help us find out how many times we need to multiply a certain number by the special number e to get another number. It's like solving a puzzle, where the answer tells us how many times we need to multiply the number by e to get to the final number.