The question "What is 40 out of 0?" is mathematically undefined because division by zero is undefined. Similarly, the question "What is 40 percent of 0?" has a well-defined answer, which is 0. When calculating a percentage of a number, multiplying the number by the percentage and then dividing by 100 gives the result. Therefore, 40 percent of 0 is 0

. Additionally, 40 to the power of 0 is 1