i have two equation

int.Parse("75192")  * 598500
          

the result

2036954352

long.Parse("75192")  * 598500

the result

49502653200

when i use calculator or php code i always get the second result “49502653200”

how i can get the result “2036954352” using calculator or php code

or convert “45002412000” to “2036954352”