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_75 ( gain INTEGER, name VARCHAR, avg_g VARCHAR )

### Question ###
Can you tell me the sum of Gain that has the Name of kass, rob, and the Avg/g smaller than 1.9?

### Accurate SQL ###

SELECT SUM(gain) FROM table_name_75 WHERE name = "kass, rob" AND avg_g < 1.9