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

### Instruction:
 马可每天用五分之一盎司的干茶叶泡他的早茶。他买的茶叶是28盎司一盒。马可能从一盒茶叶中泡多少周的每日茶？


### Response:
 马可从一盒茶叶中能泡28 / 1/5 = 28 * 5 = 140杯茶。
每周7天，马可能泡140 / 7 = <<140/7=20>>20周的每日茶。