Define a⊗b=4a-2b-ab, if x⊗1=34, then x=how much.
定义a⊗b=4a-2b-ab，若x⊗1=34，则x=多少．
<gadget id="calculator">34 + 2</gadget>
<output>36</output>

<gadget id="calculator">36 / 3</gadget>
<output>12</output>

<result>12</result>