It is stipulated that A※B=(A+3)*(B-2).1,2※17=how much.
规定A※B=(A+3)*(B-2).1,2※17=多少．
<gadget id="calculator">12 + 3</gadget>
<output>15</output>

<gadget id="calculator">17 - 2</gadget>
<output>15</output>

<gadget id="calculator">15 * 15</gadget>
<output>225</output>

<result>225</result>