Babylonian mathematics – Wikipedia

The Babylonians calculated in a number system with the base 60 (sexagesimal system). That means that the place values are ascending from right to left: 600 (1), 601 (60), 602 (3600), 603 (216.000) and so on.

Multiplying the digits by the place value gives the value of a digit, adding all the digit values gives the value of the number.

The numbers from 1 to 59 are represented as follows:

The Babylonians did not know a digit for zero. It was not regarded as a number, but as a non-existence of a number and represented with a blank.