The little white rabbit pulled 23 more radishes than the little black rabbit, and the little gray rabbit pulled 17 more radishes than the little black rabbit. How many more radishes did the little white rabbit pull than the little gray rabbit?
小白兔比小黑兔多拔了23个萝卜，小灰兔比小黑兔多拔了17个萝卜，小白兔比小灰兔多拔多少个萝卜．
<gadget id="calculator">23 - 17</gadget>
<output>6</output>

<result>6</result>