Pasted

void Main()
{
    Console.Write("3.");
    foreach (int value in PiNumberFinder(100000))
    {
        Console.Write(value);
    }
}
 
public static IEnumerable<int> PiNumberFinder(int digitNumber)
{
    int dividedBy = 11080585;
    int divisor = 78256779;
    int result;
 
    for (int i = 0; i < digitNumber; i++)
    {
        if (dividedBy < divisor)
            dividedBy *= 10;
 
        result = dividedBy / divisor;
        dividedBy = dividedBy - divisor * result;
        yield return result;
    }
}