If it is stipulated that a*b=a+b/a, then (1*2)*3=how much.
若规定a*b=a+b/a，那么(1*2)*3=多少．
<gadget id="calculator">3 / 3</gadget>
<output>1</output>

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

<result>4</result>