Xiaoyu and Xiaotian practice computer typing. Xiaoyu can type 318 characters in 6 minutes, and Xiaotian can type 456 characters in 8 minutes. Which of the two can type faster? How many words per minute on average?
小雨和小田练习电脑打字，小雨6分钟打318个字，小田8分钟打456个字，他们二人谁打字的速度快？平均每分钟快多少字？
<gadget id="calculator">456 / 8</gadget>
<output>57</output>

<gadget id="calculator">318 / 6</gadget>
<output>53</output>

<gadget id="calculator">57 - 53</gadget>
<output>4</output>

<result>4</result>