After transferring (1/5) of the grain in warehouse A, the grain in warehouse A and warehouse B is equal, how much more grain in warehouse A than in warehouse B
把甲仓粮食的(1/5)调出后，甲乙两仓的粮食相等，原来甲仓粮食比乙仓多多少
<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">1 * (4/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) / (4/5)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>