sS div(O contents, O... params) {
  ret hfulltag("div", contents, params);
}

sS div() {
  ret div("");
}

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

static BigInt div(BigInt a, int b) {
  ret a.divide(bigint(b));
}

ifclass Complex
static Complex div(Complex a, double b) {
  ret Complex(a.re/b, a.im/b);
}
endif