Wiaan Mulder declared his innings unbeaten on 367 runs and he is the captain of this match. If he wanted, he could have broken Brian Lara's record for the highest one-day innings in Test cricket. We know that Brian Lara scored 400 runs in an innings, if Wiaan Mulder could have scored 401 runs, he would have been at the highest position in this record. The runs scored by the South African batsmen are actually not going to be able to be added to the scoreboard even after batting three times, so we can definitely assume that the result of this Test match is a big win for South Africa against Zimbabwe.
So far, Zimbabwe has scored 123 runs where they have lost seven wickets. With the remaining three wickets, they might be able to add some more runs to the scoreboard and when they are all out, South Africa will invite them to bat again and it will be seen that they have lost to South Africa by an innings and a big run margin.