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_12358 ( "Model" text, "Chassis code" text, "Production time" text, "Number built" real, "Engine" text )

### Question ###
What's the total number built with a chassis code of w108.057?

### Accurate SQL ###

SELECT COUNT("Number built") FROM table_12358 WHERE "Chassis code" = 'w108.057'