code: function reduceZeroDividedByAnything(node) {
    if (node.op !== '/') {
      return Node.Status.noChange(node);
    }
    if (node.args[0].value === '0') {
      const newNode = Node.Creator.constant(0);
      return Node.Status.nodeChanged(
        ChangeTypes.REDUCE_ZERO_NUMERATOR, node, newNode);
    }
    else {
      return Node.Status.noChange(node);
    }
  }
docs: If `node` is a fraction with 0 as the numerator, reduce the node to 0. Returns a Node.Status object.