A batch of Gree air conditioners were brought into the five-star home appliance store, and half of them were sold, less than 2 units, leaving 27 units of Gree air conditioners. How many air conditioners were there in this batch?
五星家电商场运进一批格力空调，已经卖出了一半少2台，还剩下27台格力空调．这批空调原来有多少台？
<gadget id="calculator">27 - 2</gadget>
<output>25</output>

<gadget id="calculator">25 * 2</gadget>
<output>50</output>

<result>50</result>