user: Question: Name the total number of step 6 for 11 gs grade
Columns: ['GS Grade', 'Step 1', 'Step 2', 'Step 3', 'Step 4', 'Step 5', 'Step 6', 'Step 7', 'Step 8', 'Step 9', 'Step 10']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '$17,803', '$18,398', '$18,990', '$19,579', '$20,171', '$20,519', '$21,104', '$21,694', '$21,717', '$22,269']
SQL:

assistant: SELECT SUM("Step 6") FROM "Table" WHERE "GS Grade" = 11.0;