The sum of (1/2) and 2 of a number is 5, what is this number?
一个数的(1/2)与2的和是5，这个数是多少？
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

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

<gadget id="calculator">3 / (1/2)</gadget>
<output>6</output>

<result>6</result>