The expression "m * n" represents the multiplication of two numbers, where "m" and "n" are variables that can stand for any numerical values. In this context, "m" is the first number, and "n" is the second number. The result of this multiplication is called the product, which is the total obtained when "m" is added to itself "n" times. Multiplication is a fundamental arithmetic operation used in various fields, including mathematics, science, and finance. It helps in calculating areas, determining quantities, and solving equations. Understanding "m * n" is essential for performing more complex calculations and for grasping concepts like algebra and geometry.