Use * to represent an operation symbol, if x*y=(1/(xy))+(1/((x+1)(y+A))), known 2*1=(2/3), Find 2*3.
用*表示一种运算符号，如果x*y=(1/(xy))+(1/((x+1)(y+A)))，已知2*1=(2/3)，求2*3．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/6) + (1/12)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>