The younger brother has 14 yuan, and the elder brother has 10 yuan. After the elder brother gives the younger brother a certain amount of money, the younger brother's money is exactly three times that of the elder brother.
弟弟有14元钱，哥哥有10元钱，哥哥给弟弟多少元钱后，弟弟的钱正好是哥哥的3倍．
<gadget id="calculator">14 + 10</gadget>
<output>24</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">10 - 6</gadget>
<output>4</output>

<result>4</result>