【算法竞赛入门经典】习题3-8 循环小数（Repeating Decimals，ACM/ICPC World Finals 1990，UVa 202）
QThe decimal expansion of the fraction 1/33 is 0.03, where the 03 is used to indicate that the cycle 03 repeats indefinitely with no intervening digits. In fact, the decimal expansion of every ratio...
