Xiaoming made 350 laps in 5 minutes, and Xiaoli made 640 laps in 8 minutes. Who can spin faster? How much faster per minute on average?
小明5分钟转了350圈，小丽8分钟转了640圈，谁转得快？平均每分钟快多少？
<gadget id="calculator">640 / 8</gadget>
<output>80</output>

<gadget id="calculator">350 / 5</gadget>
<output>70</output>

<gadget id="calculator">80 - 70</gadget>
<output>10</output>

<result>10</result>