What is the result of multiplying 42 by 0 and then by 6?

Multiplying any number by zero yields a result of zero. In this particular case, when 42 is multiplied by 0, the result is 0. Following that, regardless of what 0 is multiplied by next—whether it be 6 or any other number—the product will still be 0. Hence, the final answer remains 0 after these operations. This principle is a fundamental rule in arithmetic, emphasizing that multiplication by zero always results in zero.