CREATE TABLE table_53878 ("Interregnum began" TEXT, "Interregnum ended" TEXT, "Duration" TEXT, "Count Palatine of Saxony" TEXT, "Count Palatine of the Rhine" TEXT)

What is the duration for Count Palatine of the Rhine of charles albert, elector of bavaria?
SELECT "Duration" FROM table_53878 WHERE "Count Palatine of the Rhine" = 'charles albert, elector of bavaria'
SELECT "Duration" FROM "table_53878" WHERE "Count Palatine of the Rhine" = 'charles albert, elector of bavaria'