=IMPORTXML("http://www.cbr.ru/scripts/XML_daily.asp?date_req=" & TEXT(today(), "dd.mm.yyyy") & "", "//ValCurs/Valute[CharCode=""USD""]/Value")
=IMPORTXML("http://www.cbr.ru/scripts/XML_daily.asp?date_req=" & TEXT(today(), "dd.mm.yyyy") & "", "//ValCurs/Valute[CharCode=""" & A1 & """]/Value")