たった + [number + counter] たった + [number + counter] + しか + [verb ない-form] たったの + [number + counter]
たった means "only", "a mere": the speaker finds a number or amount small. It goes straight before the number and counter.
Small can be disappointing, as in the first example, or impressive, as in the second. A plain count with no feeling about it doesn't take たった.
たった often comes with しか or だけ on the same number. しか needs a negative verb at the end; だけ takes any verb.
These go beyond a plain number.