If a number is increased by 20%, it becomes 360. What is the number?
一个数增加它的20%以后是360，这个数是多少．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">360 / (6/5)</gadget>
<output>300</output>

<result>300</result>