There are 30 tons of grain in a granary, and 9.75 tons are transported in the morning. How much more tons can be transported in the afternoon than in the morning to transport all in one day?
某粮仓有30吨粮食，上午运走9.75吨，下午比上午多运多少吨才能在一天内全部运完？
<gadget id="calculator">30 - 9.75 - 9.75</gadget>
<output>10.5</output>

<result>10.5</result>