(1/2) of a number is 6 less than 12, how to find this number? (solution by equation)
一个数的(1/2)比12少6，求这个数？(用方程解)
<gadget id="calculator">12 - 6</gadget>
<output>6</output>

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

<gadget id="calculator">6 / (1/2)</gadget>
<output>12</output>

<result>12</result>