Below is an instruction that describes a task. Write a response that appropriately completes the request in Thai. Please answer in Thai.

### Instruction:
A quarterback steps back to throw 80 times in a game.  30 percent of the time he does not get a pass thrown.  Half of the times that he does not throw the ball he is sacked for a loss.  How many times is the quarterback sacked for a loss in the game?

### Response:
 ไม่โยนลูก: 80(.30)=24
ถูกแทงลูกเสีย: 24/2=<<24/2=12>>12