Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_28433 ( "Specimen weight/size" text, "Calculated activity ( Bq )" real, "Calculated activity ( Ci )" text, "Estimated activity GR(api)" text, "Estimated exposure ( mRem )/hr*" text )

### Question ###
If the specimen weight/size is 1000 g / 8.79 cm, what is the calculated activity?

### Accurate SQL ###

SELECT COUNT("Calculated activity ( Bq )") FROM table_28433 WHERE "Specimen weight/size" = '1000 g / 8.79 cm'