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_7 (grid INTEGER, time VARCHAR, laps VARCHAR)

### Question ###
Can you tell me the sum of Grid that has the Time of +6.355, and the Laps larger than 23?

### Accurate SQL ###

SELECT SUM(grid) FROM table_name_7 WHERE time = "+6.355" AND laps > 23