(1/2): (x-2)=3: (2x+3).
(1/2)：(x-2)=3：(2x+3)．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">(3/2) + 6</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">(1/2) * 2</gadget>
<output>1</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">(15/2) / 2</gadget>
<output>15/4 = around 3.75</output>

<result>15/4 = around 3.75</result>