Best code ever

const calculateAirspeed = (() => {
  const calculateDistance = (() => {
    const calculateTime = (() => {
      const calculateAcceleration = (() => {
        const calculateMass = (() => {
          const mass = 0.025; // kg (assuming a standard unladen swallow mass)

          return () => {
            return mass;
          };
        })();

        const acceleration = 9.8; // m/s^2 (assuming standard acceleration due to gravity)

        return () => {
          return acceleration;
        };
      })();

      const time = 2; // seconds (assuming a constant time period)

      return () => {
        return time;
      };
    })();

    const distance = 10; // meters (assuming a constant distance)

    return () => {
      return distance;
    };
  })();

  const airspeed = calculateDistance() / (calculateTime() * calculateAcceleration() * calculateMass());

  return () => {
    return airspeed;
  };
})();

const unladenSwallowAirspeed = calculateAirspeed();
console.log(`The airspeed of an unladen swallow is approximately ${unladenSwallowAirspeed.toFixed(2)} m/s.`);