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Help with calculating percent yield?

Calculate the percent yield for the reaction in the picture.
product mass is 0.0794 grams.
starting reagent: 9-fluorenone (405.0 mg) and sodium borohydride (21.0 mg)

OH 0 1) Na BH4 37.83gmol 20adid (or Walen → 9-Fluo renon qfluoreno 182.22 gimo 1 1 180.19 gimol
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