code: function breakUpNumerator(node) {
    if (!Node.Type.isOperator(node) || node.op !== '/') {
      return Node.Status.noChange(node);
    }
    let numerator = node.args[0];
    if (Node.Type.isParenthesis(numerator)) {
      numerator = numerator.content;
    }
    if (!Node.Type.isOperator(numerator) || numerator.op !== '+') {
      return Node.Status.noChange(node);
    }
  
    // At this point, we know that node is a fraction and its numerator is a sum
    // of terms that can't be collected or combined, so we should break it up.
    const fractionList = [];
    const denominator = node.args[1];
    numerator.args.forEach(arg => {
      const newFraction = Node.Creator.operator('/', [arg, denominator]);
      newFraction.changeGroup = 1;
      fractionList.push(newFraction);
    });
  
    let newNode = Node.Creator.operator('+', fractionList);
    // Wrap in parens for cases like 2*(2+3)/5 => 2*(2/5 + 3/5)
    newNode = Node.Creator.parenthesis(newNode);
    node.changeGroup = 1;
    return Node.Status.nodeChanged(
      ChangeTypes.BREAK_UP_FRACTION, node, newNode, false);
  }
docs: If `node` is a fraction with a numerator that is a sum, breaks up the fraction e.g. (2+x)/5 -> (2/5 + x/5) Returns a Node.Status object