Unfortunately Fabio, whilst I love the enthusiasm, that scoreline is very unlikely. Boro average a goal a game for and a little less against. Rotherham score at about the same rate but concede 1.5 goals per game on average. 2-0 to Boro.
Oddly enough I have some code that analysis footie games and it has selected the boro game as a game that will NOT end 1-1 and I have no idea why as it is likely to be a low scoring game though with the first goal not coming until around the half time mark, maybe 30-45 minutes for the first goal. Then one in the second half to make it 2-0. The second goal coming around the hour mark as we don't score many late goals.
Mathematical analysis complete, Fabio yer right 4-0 boro!