3.3.1 Multiplication and Division Notation
The symbol was first used by an English mathematician William Oughtred (1574–1660) in 1631. Another symbol for multiplication is , although this is generally only used when writing math for computer programmes.
[ The division symbol () was first used by Johann Rahn (1622−676) in a book published in German in 1659. ] For division, a range of notations are used: , or , or 72/8 or all mean “72 divided by 8.”