(4/5) of a number is 48, what is 3.5% of this number.
一个数的(4/5)是48，这个数的3.5%是多少．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">48 / (4/5)</gadget>
<output>60</output>

<gadget id="calculator">3.5 / 100</gadget>
<output>0.035</output>

<gadget id="calculator">60 * 0.035</gadget>
<output>2.1</output>

<result>2.1</result>