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_54037 ( "Year" real, "Single" text, "Chart" text, "Position" real, "Weeks on chart" real )

### Question ###
What is the sum of the weeks on a chart a song with a position less than 1 haas?

### Accurate SQL ###

SELECT SUM("Weeks on chart") FROM table_54037 WHERE "Position" < '1'