Question: 6 divided by what equals 21?
Answer: Therefore, the answer to what divided by 6 equals 21 is 126. You can prove this by taking 126 and dividing it by 6, and you will see that the answer is 21. Tip: For future reference, when you are presented with a problem like "What divided by 6 equals 21?", all you have to do is multiply the two known numbers together.