CREATE TABLE table_54282 ("IWCR No." TEXT, "Name" TEXT, "Wheel arrangement" TEXT, "SR No." TEXT, "Year made" FLOAT, "Year withdrawn" FLOAT)

What is the sum number of years where the wheel arrangement of 0-4-0t?
SELECT COUNT("Year made") FROM table_54282 WHERE "Wheel arrangement" = '0-4-0t'
SELECT COUNT("Year made") FROM "table_54282" WHERE "Wheel arrangement" = '0-4-0t'