Split 36 into the sum of four numbers A, B, C, and D, so that A+2=B-2=C*2=D/2, then B=how much.
把36拆成A、B、C、D四个数的和，使得A+2=B-2=C*2=D/2，则B=多少．
<gadget id="calculator">36 - 2</gadget>
<output>34</output>

<gadget id="calculator">2 + 34</gadget>
<output>36</output>

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

<gadget id="calculator">1 + 1 + (1/2) + 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">36 / (9/2)</gadget>
<output>8</output>

<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<result>10</result>