A number (3/4) is 20% more than 4.5, what is this number?
一个数的(3/4)比4.5多20%，这个数是多少．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">4.5 * (1/5)</gadget>
<output>0.9</output>

<gadget id="calculator">4.5 + 0.9</gadget>
<output>5.4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">5.4 / (3/4)</gadget>
<output>7.2</output>

<result>7.2</result>