Lazy sheep has four bags of biscuits: bag A and bag B have a total of 32 biscuits, bags B and C have 30 biscuits, bags C and bag D have a total of 23 biscuits, then how many biscuits are there in bags A and D?
懒羊羊有四袋饼干：甲袋和乙袋共有32个饼干，乙袋和丙袋共有30个饼干，丙袋和丁袋共有23个饼干，则甲、丁两袋共有多少个饼干．
<gadget id="calculator">32 - 30</gadget>
<output>2</output>

<gadget id="calculator">2 + 23</gadget>
<output>25</output>

<result>25</result>