There are two warehouses A and B. Warehouse A stores 30 tons of grain. If (1/10) is taken out from warehouse A and put into warehouse B, the amount of grain stored in the two warehouses is equal. How many tons of grain did warehouse B originally store?
甲乙两个仓库，甲仓库存粮30吨，如果从甲仓库中取出(1/10)放入乙仓库，则两仓库存粮数相等．乙仓库原来存粮多少吨？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10) - (1/10)</gadget>
<output>4/5 = around 0.8</output>

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

<result>24</result>