ref: 4665f57c5a86ade9ef524b3d7380f6fcd1abb0ff dir: /lib/json/test/inputs/y_number_huge_exp.json/
[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]