CREATE TABLE table_37770 ("Year" FLOAT, "Division" FLOAT, "League" TEXT, "Reg. Season" TEXT, "Playoffs" TEXT)

Which Division that has a Reg Season of 1st, western, and Playoffs of champions, and a Year smaller than 2013?
SELECT AVG("Division") FROM table_37770 WHERE "Reg. Season" = '1st, western' AND "Playoffs" = 'champions' AND "Year" < '2013'
SELECT AVG("Division") FROM "table_37770" WHERE "Playoffs" = 'champions' AND "Reg. Season" = '1st, western' AND "Year" < '2013'