At that time, two cattle dealers sold a group of cattle they had in common, and the money they bought for each cattle was exactly equal to the number of cattle. They bought back a flock of sheep with the money they got, 10 cents per sheep, and bought a lamb for a fraction of the money. They divided the sheep equally. As a result, the first person got an extra big sheep, and the second person got the lamb. In order to be fair, how much money should the first person give to the second person.
在时候有两位贩卖家畜的商人把他们共有一群牛卖掉，每头牛买得的钱数正好等于牛的头数．他们把所得的钱买回了一群羊，每只羊10问钱，钱的零头又买了一只小羊．他们平分了这些羊，结果第一个人多得了一只大羊，第二人得到了那只小羊．为了公平，第一个人应补给第二人多少文钱．
<gadget id="calculator">10 - 6</gadget>
<output>4</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<result>2</result>