Ding Ding and his father and mother are playing on the seesaw in the park. His father weighs 72 kg and sits on one end of the seesaw. Ding Ding, who weighs only half of his mother, sits on the other end of the seesaw with his mother. At this time, one end of his father is still on the ground; He borrowed a dumbbell with a mass of 6 kg and added it to the end where he and his mother were sitting. As a result, Tintin landed on the end. If Ding Ding's weight is an integer kilogram, then how many kilograms is Ding Ding's weight?
丁丁和爸爸、妈妈在公园里玩跷跷板，爸爸体重为72千克，坐在跷跷板的一端，体重只有妈妈一半的丁丁和妈妈同坐在跷跷板的另一端，这时，爸爸坐的一端仍然着地；丁丁借来一个质量为6千克的哑铃，加在他和妈妈坐的一端，结果丁丁这一端着地．如果丁丁的体重是整数千克，那么丁丁的体重是多少千克．
<gadget id="calculator">69 / 3</gadget>
<output>23</output>

<result>23</result>