Let $x = (0.\overline{6})(0.\overline{06})$. When x is written out as a decimal, what is the sum of the first 15 digits after the decimal point?
+36915 .66666666 ... = 2/3
.0606060606..... = 2/33
2/3 * 2/33 = 4/99
4/99 = .0404040404040404... 7 x 4 = 28 .
