What is the result of 3A+4B**2 when A=8, B=2.5
当A=8，B=2.5时3A+4B**2的结果是多少
<gadget id="calculator">3 * 8</gadget>
<output>24</output>

<gadget id="calculator">2.5 ** 2</gadget>
<output>6.25</output>

<gadget id="calculator">4 * 6.25</gadget>
<output>25</output>

<gadget id="calculator">24 + 25</gadget>
<output>49</output>

<result>49</result>