Division returns zero

Question

This simple calculation is returning zero, I can\'t figure it out:

decimal share = (18 / 58) * 100;

Answer 1

Whenever I encounter such situations, I just upcast the numerator.

double x = 12.0 / 23409;
decimal y = 12m / 24309;

Console.WriteLine($"x = {x} y = {y}");