Two boxes of goods, take 20% from box A and 25% from box B. Box A weighs the same as the rest of box B. It is known that box B originally contained 80kg of items. How many kilograms did the original box contain?
两箱物品，从甲箱中取出20%，从乙箱中取出25%．甲箱与乙箱剩下的物品一样重．已知乙箱原来有物品80kg．甲箱原来有物品多少千克？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">80 * (3/4)</gadget>
<output>60</output>

<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">60 / (4/5)</gadget>
<output>75</output>

<result>75</result>