public static String doubleNumber (String text){
		String result = "";
		boolean firstDot = true;
		for(int i = 0; i < text.length(); i++){
			char c = text.charAt(i);
			if(c >= 48 && c <= 58) result += c;
			else if (firstDot && c == '.') {
				result += c;
				firstDot = false;
			}
		}
		if(result.charAt(result.length() - 1) == '.') result += '0';
		return result;
	}