Let a※b represent (ab)*3+2, try to calculate 6※3, 15※2?
设a※b表示(a-b)*3+2，试计算6※3，15※2？
<gadget id="calculator">15 - 2</gadget>
<output>13</output>

<gadget id="calculator">13 * 3</gadget>
<output>39</output>

<gadget id="calculator">39 + 2</gadget>
<output>41</output>

<result>41</result>