Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How many weeks have w 51-29 as the result/score?

### Inputs:
table_name: table, columns: ['Week', 'Date', 'Opponent', 'Time', 'Game Site', 'Result/Score', 'Record', 'Match Report']

### Response:
SELECT SUM Week FROM table WHERE Result/Score = w 51-29