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

### Instruction:
 查德正在测量不同国家的大小。他发现加拿大比美国大1.5倍，俄罗斯比加拿大大1/3。俄罗斯比美国大几倍？


### Response:
 加拿大等于美国的1.5倍
俄罗斯等于美国的2倍，因为1.5 x (1 + 1/3) = <<2=2>>2