Multiple Clickable Areas On Sprite

I can't find a way to work with multiple 2D collision boxes on one game object.

In a card game, I have card objects whose sprites have various numbers on them. I need to know what number was clicked on. I have code to detect a click within a 2D collision box and print the gameObject tag, but have no idea how to distinguish one collision box from another to find the number clicked.

         Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
         Vector2 mousePos2D = new Vector2(mousePos.x, mousePos.y);
         RaycastHit2D hit = Physics2D.Raycast(mousePos2D, Vector2.zero);
         if (hit.collider != null)
         {
             Debug.Log(hit.collider.gameObject.tag);}