The distance between A and B is 450.5 meters. Xiaofang and Xiaogang are walking toward each other at the same time. After walking for 7 minutes, they are still 30.5 meters apart. It is known that Xiaofang walks 30.07 meters per minute. How many meters does Xiaogang walk per minute?
甲乙两地相距450.5米，小芳和小刚同时从两地相向而行，行7分后两人还相距30.5米，已知小芳每分走30.07米，小刚每分走多少米？
<gadget id="calculator">450.5 - 30.5</gadget>
<output>420</output>

<gadget id="calculator">420 / 7</gadget>
<output>60</output>

<gadget id="calculator">60 - 30.07</gadget>
<output>29.93</output>

<result>29.93</result>