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

### Instruction:
Bob orders a pizza with 8 slices.  He eats half of it and each slice was 300 calories.  How many calories did he eat?

### Response:
 แผ่นละ 300 แคลอรี่
8 แผ่น: 300*8=<<300*8=2400>>2400 แคลอรี่
ครึ่งหนึ่งของพิซซ่า: 2400/2=<<2400/2=1200>>1200 แคลอรี่