expression, i-adjective
that settles it quickly; no need to say more; that makes it easy
Used when a situation is resolved or a decision is reached quickly because the other person understands immediately, or when the speaker implies that further explanation is unnecessary. Often carries a nuance of 'that simplifies things' or 'then it's no problem'.
See also: 話が早い
そういうことなら話は早い。すぐに手配しよう。
If that's the case, that settles it quickly. I'll make the arrangements right away.
彼が賛成してくれたから話は早かった。
Since he agreed, it was settled quickly.