in indian system we put commas like this 12,34,56,789
but in international system we put commas like this
intnational system is a way of writing nos. it follows:
, French Système International D'unités,
international decimal system of weights and measures derived from and extending the metric system of units. Adopted by the 11th General Conference on Weights and Measures in 1960, it is abbreviated SI in all languages.