当然だ/当たり前だ => natural; as a matter of course N2
...ところのN => But... N3
Explain
のことだから => because; since ~ N2
... のところ => now, this time, recently N3
Time
も同然 => just like; same as ~ N2
全然~ない => (not) at all N4
…だけのことだ => That's all, just... N2
Position, perspective
ということ/というの => convert phrase into noun N3
この / その / あの => this / that N5
Spatial relations
...まで (のこと) だ => only; just; nothing else N1
Determination, decision
とのことだ => I heard; it means that; in other words ~ N1
Heard
...もの (こと) も...ない => Leave it as is N3
Emphasize