Half of a number is (1/4), what is the correct formula for finding this number
一个数的一半是(1/4)，求这个数，正确算式是多少
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">(1/4) / (1/2)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>