Warehouses A and B each have several tons of grain. After transporting (1/5) from Warehouse A to Warehouse B, they then transport (1/5) from Warehouse B to Warehouse A. The granaries are equal, what fraction of the grain in warehouse A is the grain in warehouse B?
甲、乙两个仓库各有粮食若干吨，从甲仓库运出(1/5)到乙仓库后，又从乙仓库运出(1/5)到甲仓库，这时甲、乙两仓库的粮仓相等，原来甲仓库的粮食是乙仓库的几分之几？
<gadget id="calculator">1 / 5</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">10 / (4/5)</gadget>
<output>25/2 = around 12.5</output>

<gadget id="calculator">(25/2) * (1/5)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">10 - (5/2)</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">(15/2) / (4/5)</gadget>
<output>75/8 = around 9.375</output>

<gadget id="calculator">20 - (75/8)</gadget>
<output>85/8 = around 10.625</output>

<gadget id="calculator">(15/2) / (4/5) / (85/8)</gadget>
<output>15/17 = around 0.882353</output>

<result>15/17 = around 0.882353</result>