input: from typing import Callable
  
  
  def create_lambda_sum(a: int, b: int) -> Callable[[int, int], int]:
      """ Create a lambda function to calculate the sum of two variables and return the lambda function.
      >>> create_lambda_sum(3, 4)(3, 4)
      7
      >>> create_lambda_sum(-2, 5)(-2, 5)
      3
      """
  
output:     return lambda x, y: (a + b) + (x + y)