static BigInt over(BigInt a, BigInt b) {
  ret div(a, b);
}



static BigInt over(BigInt a, int b) {
  ret div(a, b);
}


static Complex over(Complex a, double b) {
  ret div(a, b);
}



static double over(double a, double b) {
  ret div(a, b);
}


static double over(double a, int b) {
  ret div(a, b);
}


static long over(long a, long b) {
  ret div(a, b);
}


static int over(int a, int b) {
  ret div(a, b);
}