A number plus 25% of it equals 3 times 20. Find this number.
一个数加上它的25%等于20的3倍．求这个数．
<gadget id="calculator">20 * 3</gadget>
<output>60</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

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

<result>48</result>