There are 5 boxes of candies. If 20 kilograms of candies are taken out of each box, the remaining candies in the 5 boxes are exactly equal to the weight of the original 3 boxes of candies. Please calculate how many kilograms of candies are in each box.
有5箱糖果，如果从每个箱子里取出20千克，那么5个箱子里剩下的糖果正好等于原来3箱糖果的重量，请你算一算，原来每个箱子里装多少千克糖果．
<gadget id="calculator">20 * 5</gadget>
<output>100</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<result>50</result>