CREATE TABLE table_41902 ("Station" TEXT, "Year opened" TEXT, "Metropolitan borough [c ]" TEXT, "Zone" FLOAT, "Station users 2006\\u201307" FLOAT, "Station users 2007\\u201308" FLOAT)

Can you tell me the total number of Zone than has the Station users 2007-08 larger than 243,800, and the Year opened of 1855?
SELECT COUNT("Zone") FROM table_41902 WHERE "Station users 2007\u201308" > '243,800' AND "Year opened" = '1855'
SELECT COUNT("Zone") FROM "table_41902" WHERE "Station users 2007\u201308" > '243,800' AND "Year opened" = '1855'