If the price of a commodity is increased by 20%, and then the price is increased by 20%, the current price is 36 yuan, what is the original price.
某商品涨价20%后再涨价20%，现价是36元，原价为多少元．
<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">(6/5) * (6/5)</gadget>
<output>36/25 = around 1.44</output>

<gadget id="calculator">36 / (36/25)</gadget>
<output>25</output>

<result>25</result>