Both baskets A and B have the same number of apples. After taking 20 apples from basket A and putting them into basket B, the number of apples in basket A is exactly (1/5) of that in basket B. How many baskets are there?
甲、乙两筐苹果的个数一样多．从甲筐取20个放入乙筐后，甲筐苹果的个数正好是乙筐的(1/5)．甲筐原来有多少个．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 20</gadget>
<output>4</output>

<gadget id="calculator">20 + 4</gadget>
<output>24</output>

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

<gadget id="calculator">24 / (4/5)</gadget>
<output>30</output>

<result>30</result>