I got this working too.
--But I want to--
(1)1+2=display in result and in valuebox1.
on second result
(2)2+3=display in result and in valuebox1, the first result has moved to valuebox2.
on third result
(2)9+8=display result and in valuebox1, the second result moves to valuebox2, the first result moves to valuebox3.