static F1<S> ai_trainable_multiplyingNumberConversion(LS trainingParams) {
  double ratio = 1;
  S pat = null;
  for (S key, S value : listParamsToMap(trainingParams)) {
    long a = parseFirstLong(key), b = parseFirstLong(value);
    pat = replaceFirstLong(value, "*");
    ratio = doubleRatio(b, a);
  }
  final double _ratio = ratio;
  final S _pat = pat;
  ret func(S s) -> S { format(_pat, round(parseFirstLong(s)*_ratio)) };
}