There are 5 chains with 4 links on each link. It costs 2 yuan to burn a link, 3 yuan to seal a link, and connect all the chains. How much is the total payment?
有5节链条，每节上有4个环，烧断一个环要付2元，封好一个环要付3元，将链条全部衔接，一共付了多少元．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<result>25</result>