Calculate 100/89. You get the decimal expansion 1.1235955056 . . .
Look closely, and you’ll see that this fraction generates the first five Fibonacci numbers (1, 1, 2, 3, and 5) before blurring into other digits. Recall that, starting with 1 and 1, each successive Fibonacci number is the sum of the two previous Fibonacci numbers: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, and so on.
Calculate 10000/9899. This time, you get 1.0102030508132134559046368 . . .