Dupuois-uang-ce Numerals

The Dupuois-uang-ce Numerals are created by Shinwoi Ganzen in the 3rd century BC, and its modern form has evolved in the 1832. It was used in everyday life until 1709, when Gooperland replaced those with Arabic numerals. Today, it is used for measuring things where US customary units is used (today American customary ones are used in Central Hatsune Miku, Toyajikawa and Matsuri (previously used Japanese units of measurement until replacement to US customary in 1900), numbering lists, and Gooperlandian Bible's psalm numbers.

The numbers
There are signs for: 1, 5, 10, 100, 1000, 10000, 100000 and 1000000 (1 million): To indicate 500, 5000, 50000, 500000 and 5000000, the superscript lowercase f is written after the power of 10: Δf = 50, Xf = 500, Шf = 5000, Ξf = 5000, Ef = 500000 and Af = 5000000 (5 million).

Unlike Roman numerals, number 4 is written IIII and 9 as FIIII (not IF or IΔ).

The year 1832 is written as ШXfXXXΔΔΔII (MDCCCXXXII in Roman numerals).

A numeral grater than 999999999 will have a ◌̀ (grave accent) added above the power: Ì represents 1 billion (or 1000000000).

Special symbols
There are special symbols to represent the fractions. P is one half.