The sum of the current ages of A, B, and C is 113 years old. When A's age is half of B's age, C is 38 years old. When B's age is half of C's age, A is 17 years old. Then How old is B now?
甲、乙、丙三人现在岁数的和是113岁，当甲的岁数是乙的岁数的一半时，丙是38岁，当乙的岁数是丙的岁数的一半时，甲是17岁，那么乙现在是多大岁数？
<gadget id="calculator">38 - 17</gadget>
<output>21</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">21 / 3</gadget>
<output>7</output>

<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<gadget id="calculator">7 + 14 + 38</gadget>
<output>59</output>

<gadget id="calculator">113 - 59</gadget>
<output>54</output>

<gadget id="calculator">54 / 3</gadget>
<output>18</output>

<gadget id="calculator">14 + 18</gadget>
<output>32</output>

<result>32</result>