Numerical digit
From India, the thriving trade between Islamic sultans and Africa carried the concept to Cairo. Arabic mathematicians extended the system to include decimal fractions, and Muḥammad ibn Mūsā al-Ḵwārizmī wrote an important work about it in the 9th  century. The modern Arabic numerals were introduced to Europe with the translation of this work in the 12th century in Spain and Leonardo of Pisa's "Liber Abaci" of 1201. In Europe, the complete Indian system with the zero was derived from the Arabs in the 12th century.
Arabic Numeral Series
The Arabic Numeral Series, sometimes referred to as the Arabics, is a series of 19 short 16mm films completed by the American experimental filmmaker Stan Brakhage in 1981 and 1982. The "Arabic Numeral Series" gets its name from the fact that none of the films included in it have titles, instead opening with an arabic numeral. Brakhage produced another cycle, the "Roman Numeral Series", whose films all have Roman numerals instead of titles, around the same time. All of the "Arabics" are silent and are intended to be projected at 18 frames per second.