Definition A△B=A*B+A+B; A▽B=A*BAB. Calculate (3△5)▽(4△5)/3.
定义A△B=A*B+A+B；A▽B=A*B-A-B．计算(3△5)▽(4△5)/3．
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">15 + 3 + 5</gadget>
<output>23</output>

<gadget id="calculator">23 * 29</gadget>
<output>667</output>

<gadget id="calculator">667 - 23 - 29</gadget>
<output>615</output>

<gadget id="calculator">615 / 3</gadget>
<output>205</output>

<result>205</result>