Warehouse A stores 38 tons of grain. After transporting 18 tons of grain from Warehouse B, the grain stored in Warehouse A is twice that of Warehouse B. How many tons of grain is there in Yicang?
甲仓存有粮食38吨，从乙仓运走18吨粮食后，甲仓的存粮是乙仓存粮的2倍．乙仓原有粮食多少吨？
<gadget id="calculator">38 / 2</gadget>
<output>19</output>

<gadget id="calculator">19 + 18</gadget>
<output>37</output>

<result>37</result>