2. (10分) Let 0.a1a2a3a4 ...be the decimal expansion of the rational number 63eedd8d0ffb7.jpg. Let bk = a2k,h = 1,2,...The decimal 0.b1b2b3b4... also represents a rational number 63eede3f611c3.jpg. Find 63eede3f611c3.jpg.