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_37328 ( "Unit" text, "Russian" text, "Translation" text, "Ratio" real, "Metric value" text, "Avoirdupois value" text, "Ordinary value" text )

### Question ###
What is the largest ration with an ordinary value of 84 zolotnik?

### Accurate SQL ###

SELECT MAX("Ratio") FROM table_37328 WHERE "Ordinary value" = '84 zolotnik'