A kind of edible oil, originally priced at 4 yuan per liter, is now due to the increase in cost, and the unit price has increased by 25%. How many liters can I buy now for the money I bought for 20L?
一种食用油，原来每升售价为4元，现在由于成本提高，单价提高了25%．原来买20L的钱，现在能买多少升．
<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">4 * (5/4)</gadget>
<output>5</output>

<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<result>16</result>