Because you're dividing two integers, so it will only take the integer part (integer division).
Dividing integers in a computer program requires special care. Some
programming languages, treat integer division (i.e by giving the integer quotient as the answer). So the answer is an integer.
In real life In Java
4/3 = 1.33333 4/3 = 1
25/12 = 2.083333 25/12 = 2
9/2 = 4.5 9/2 = 4
50/110000 = 0.000454545 50/110000 = 0
You can cast one of the number (or both but it's actually useless) to
double to avoid that :
double width = (double)50/110000;
double width = 50d/110000;
double width = 50.0/110000;