The expression "6 × 4" represents a multiplication problem where the number 6 is multiplied by the number 4. This means that you are adding the number 6 together four times. In simpler terms, it can be thought of as having four groups of six items each. When you calculate "6 × 4," the result is 24. This means that if you have six items in each of four groups, you will have a total of twenty-four items. Multiplication is a fundamental arithmetic operation used in various everyday situations, such as calculating total costs or quantities.