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

### Instruction:
Jame is trying to learn to tear playing cards.  He can tear 30 cards at a time.  A new deck of cards has 55 cards if you include the jokers and blank cards.  He tears cards 3 times a week.  If he buys 18 decks how many weeks can he go?

### Response:
 เขาแตกไพ่ 30 x 3 = <<30*3=90>>90 ใบต่อสัปดาห์
เขาซื้อไพ่ 55 x 18 = <<55*18=990>>990 ใบ
ดังนั้น เขาสามารถแตกไพ่ได้ 990/90 = <<990/90=11>>11 สัปดาห์