Mom made a long-distance call to Dad for 15 minutes and spent a total of 10.5 yuan. How much is the average fee per minute?
妈妈给爸爸打长途电话15分钟，一共花了10.5元，平均每钟分付费多少元？
<gadget id="calculator">10.5 / 15</gadget>
<output>0.7</output>

<result>0.7</result>