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import "dart:math";

main() 
{
  const int ITERATIONS = 100000;
  double series = 1.0;
  double denominator = 3.0;
  double negate = -1.0;

  for (int i = 0; i < ITERATIONS; i++) 
  {
    series + (negate * (1 / denominator));
    denominator += 2.0;
    negate *= -1.0;
  }

  double pi = 4 * series;
  print("We calculated pi as $pi");
  print("The real pi is $PI");
  print("We were off by ${PI - pi}");
}