There are 50 bottles of Sprite in the box. After drinking 20% of it, put the remaining 20% in the box. How much Sprite is in the box?
箱子里有50瓶雪碧，喝了它的20%以后，又装入箱子里所剩下的20%，这时箱子里有雪碧多少
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">50 * (4/5)</gadget>
<output>40</output>

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

<gadget id="calculator">40 * (6/5)</gadget>
<output>48</output>

<result>48</result>