When a=3, b=2, a**2+5b=how much.
当a=3，b=2时，a**2+5b=多少．
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">9 + 10</gadget>
<output>19</output>

<result>19</result>