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_13836704_7 (freight___metric_tonnes__ VARCHAR, transit_passengers VARCHAR)

### Question ###
What are the total freights in metric tonnes when the total transit passengers is 147791?

### Accurate SQL ###

SELECT freight___metric_tonnes__ FROM table_13836704_7 WHERE transit_passengers = 147791