Xiaoxiao’s weight is 47kg, Xiaohua is 8kg heavier than Xiaoxiao, and Wang Hai is 6kg lighter than Xiaohua. How many kilograms does Wang Hai weigh?
小小的体重是47千克，小华比小小重8千克，王海又比小华轻6千克，王海的体重是多少千克？
<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<gadget id="calculator">47 + 2</gadget>
<output>49</output>

<result>49</result>