Rossan numerals

The Rossan numerals are a numeral system that originated on the island of La Rossa around the year 1700 TT. Written in base 8, the system has mostly been replaced by the decimal system for purposes of international cooperation and trade, although it remains widely in use across the island. Read left-to-right, and top-to-bottom, the digits are arranged around a central cross glyph in order of value, with the "thousands" or mille in the top-left corner, and the single units in the bottom-right. For numbers with more than four digits, two or more glyphs are placed in sequence.