50% of a number is as large as 60% of (2/3), what is this number?
一个数的50%与(2/3)的60%一样大，这个数是多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/5) / (1/2)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(2/3) * (6/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>