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_name_80 ( time_to_ft__m__at_40 VARCHAR, shell__lb_ VARCHAR, max_height__ft_ VARCHAR )

### Question ###
What is the amount of time (sum) at 40 that it takes a 16 lb shell to reach a maximum of no more than 22,000 ft?

### Accurate SQL ###

SELECT COUNT(time_to_ft__m__at_40) AS °__seconds_ FROM table_name_80 WHERE shell__lb_ = 16 AND max_height__ft_ < 22 OFFSET 000