For any natural numbers a and b, it is stipulated that a*b=a/b*2+3, and 256*X=19, then X=how much.
对于任意自然数a、b，规定a※b=a/b*2+3，且256※X=19，则X=多少．
<gadget id="calculator">19 - 3</gadget>
<output>16</output>

<gadget id="calculator">512 / 16</gadget>
<output>32</output>

<result>32</result>