input: Write a python function to handle form data submission from HTML and return a response.
  assert handle_form_data({'inputData': 'test'}) == 'Received: test'
  assert handle_form_data({'inputData': 'hello world'}) == 'Received: hello world'
  assert handle_form_data({'inputData': '12345'}) == 'Received: 12345'
output: def handle_form_data(form_data):
      input_data = form_data.get('inputData', '')
      return f"Received: {input_data}"