Given (1/2): x=0.2:0.3, what is the value of x
已知(1/2)：x=0.2：0.3，则x的值为多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">0.3 * (1/2)</gadget>
<output>0.15</output>

<gadget id="calculator">0.15 / 0.2</gadget>
<output>0.75</output>

<result>0.75</result>