CREATE TABLE table_23278 ("Rnd" FLOAT, "Circuit" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winner" TEXT, "Results" TEXT)

How many races had #99 gainsco/bob stallings racing in round 10?
SELECT COUNT("Fastest Lap") FROM table_23278 WHERE "Rnd" = '10' AND "Pole Position" = '#99 GAINSCO/Bob Stallings Racing'
SELECT COUNT("Fastest Lap") FROM "table_23278" WHERE "Pole Position" = '#99 GAINSCO/Bob Stallings Racing' AND "Rnd" = '10'