There is an integer, the difference between its 2 times and 3 is equal to the sum of its half and 3, then what is the number.
有一个整数，它的2倍与3的差等于它的一半与3的和，则这个数是多少．
<gadget id="calculator">3 + 3</gadget>
<output>6</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 - (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">6 / (3/2)</gadget>
<output>4</output>

<result>4</result>