Rewrite log(x^y)*4.5 = x y*log(x)*4.5 = x y = x/(4.5*log x) So picking a random number like 234, we get y=21.94819 and the digit sum of 234^22 ==

Rewrite log(x^y)*4.5 = x y*log(x)*4.5 = x y = x/(4.5*log x) So picking a random number like 234, we get y=21.94819 and the digit sum of 234^22 == 234. In this case we actually just had to compute one exponent and one digit sum.