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

### Instruction:
What was the multiplier of the processor with sSpec number of SLGPR(C0) and a release price of N/A?

### Inputs:
table_name: table, columns: ['Model number', 'sSpec number', 'Frequency', 'L2 cache', 'Mult.', 'Voltage', 'Socket', 'Release date', 'Part number(s)', 'Release price ( USD )']

### Response:
SELECT Mult. FROM table WHERE Release price ( USD ) = n/a AND sSpec number = slgpr(c0)