The combined age of Uncle Zhang and Uncle Li is 56 years old. When Uncle Zhang was half of Uncle Li’s current age, and Uncle Li’s age at that time was Uncle Zhang’s age, how old is Uncle Zhang now?
张叔叔和李叔叔两人年龄和是56岁，当张叔叔是李叔叔现在年龄的一半时，李叔叔当时的年龄是张叔叔的年龄，那么张叔叔现在有多少岁？
<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">56 / 7</gadget>
<output>8</output>

<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<result>24</result>