The Hua Cup is held in Chaoyang Middle School. The primary group is divided into three examination rooms. The first examination room has more tables than the third examination room. If you move some tables from the first examination room to the second examination room, the number of tables in the second examination room will increase by 2 times, and then move half of the existing tables in the second test room to the third test room, the number of tables in the first test room and the third test room will be equal, and both are twice the number of the second test room, if there are 60 tables in the first test room table, so how many tables are there in the third examination room?
华杯赛在朝阳中学举行，小学组分为三个考场，第一考场比第三考场的桌子多，如果先从第一考场搬若干张桌子到第二考场，使第二考场的桌子数增加2倍，再把第二考场现有桌子的一半搬到第三考场，第一考场和第三考场的桌子数就相等了，且都是第二考场的2倍，如果一开始第一考场有60张桌子，那么原来第三考场有多少张桌子．
<gadget id="calculator">1.5 * 12</gadget>
<output>18</output>

<result>18</result>