text: #include <stdio.h>
  #include <stdlib.h>
  
  int main(int argc, char **argv) {
    long double u = 2.0L;
    long double v = -4.0L;
  
    for (size_t i = 0; i < 90; i++) {
      long double w = 111.0L - 1130.0L / v + 3000.0L / (u * v);
      u = v;
      v = w;
    }
  
    printf("%-16.12Lf\n", v);
  
    return EXIT_SUCCESS;
  }
  