svoid gazelle_mathBot1_handlePost(S _user, S _botToken, Map post) {
  Number postID = cast post.get("id");
  S text = cast post.get("text");
  LS groups = regexpGroupsIC("What is (\\d+)\\s*\\+\\s*(\\d+)", text);
  if (empty(groups)) ret;
  print("Processing post " + postID + ": " + quote(text));
  BigInt result = plus(parseBigInt(first(groups)), parseBigInt(second(groups)));
  print("Calculated result: " + result);
  print(postJSONPage("https://gazelle.rocks/bot/createPost",
    +_user, +_botToken, refs := postID, text := "The result is " + result, type := "Answer", botInfo := "Math bot"));
}

Began life as a copy of #1029982