What is the total for Chen Yibing ( chn ), when his B Score was smaller than 9.225?
CREATE TABLE "qualified_competitors" (
  "position" real,
  "gymnast" text,
  "a_score" real,
  "b_score" real,
  "total" real
);
SELECT COUNT("total") FROM "qualified_competitors" WHERE "gymnast"='chen yibing ( chn )' AND "b_score"<9.225;