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

### Instruction:
What's the sum of sign with more than 53 bits precision, double extended (80-bit) type, and more than 80 total bits?

### Inputs:
table_name: table, columns: ['Type', 'Sign', 'Exponent', 'Significand', 'Total bits', 'Exponent bias', 'Bits precision', 'Number of decimal digits']

### Response:
SELECT SUM Sign FROM table WHERE Bits precision > 53 AND Type = double extended (80-bit) AND Total bits > 80