input: Write a python function to calculate the sum of two numbers from an event dictionary.
  assert lambda_handler({'Input-1': 10, 'Input-2': 15}, None) == {'Result': 25}
  assert lambda_handler({'Input-1': 5, 'Input-2': 20}, None) == {'Result': 25}
  assert lambda_handler({'Input-1': -5, 'Input-2': 5}, None) == {'Result': 0}
output: def lambda_handler(event, context):
      result = event['Input-1'] + event['Input-2']
      return {'Result': result}