push(new Item("D", ((Double) it2.getConstant()) + ((Double) it.getConstant())));
result = new Item("D", ((Double) it2.getConstant()) + ((Double) it.getConstant()));
	private void pushByDoubleMath(int seen, Item it, Item it2) {		if ((it.getConstant() != null) && it2.getConstant() != null) {			if (seen == DADD)				push(new Item("D", ((Double) it2.getConstant()) + ((Double) it.getConstant())));			else if (seen == DSUB)				push(new Item("D", ((Double) it2.getConstant()) - ((Double) it.getConstant())));			else if (seen == DMUL)				push(new Item("D", ((Double) it2.getConstant()) * ((Double) it.getConstant())));			else if (seen == DDIV)				push(new Item("D", ((Double) it2.getConstant()) / ((Double) it.getConstant())));			else if (seen == DREM)				push(new Item("D"));	//?				} else {			push(new Item("D"));		}	}