Set the denominator as the highest number possible, 100.
[tex]\frac{400}{100}[/tex]
That is an improper fraction. Convert that to a mixed number.
[tex]\frac{400}{100} = 4[/tex]
Do the equation, 4 to the power of 2.
[tex]4^2 = 400[/tex]
Only for this case is 4 to the power of 2 accepted as a multidigit version of itself.
Therefore, your answer is 400.
