Qingqing and Lin Lin set off from two places 3290 meters apart at the same time and walked towards each other. After 7 minutes, they met on the way. Qingqing walks 70 meters per minute, Lin Lin rides a bicycle, how many meters per minute?
青青和林林同时从相距3290米的两地出发，相对而行，经过7分钟，两人在途中相遇．青青步行，每分钟走70米，林林骑车，每分钟行多少米？
<gadget id="calculator">3_290 / 7</gadget>
<output>470</output>

<gadget id="calculator">470 - 70</gadget>
<output>400</output>

<result>400</result>