A new batch of air conditioners has been imported into the Five Star Electric Mall, and they are placed in the east and west warehouses according to the ratio of the number of units at 5:3. After 30 air conditioners in the east warehouse are sold, the number of units in the east and west warehouses will be equal. How many new air conditioners are in the mall?
五星电器商场新进一批空调，按台数的比5：3分放在东西两个仓库里，东仓库的空调卖出30台后，东西两仓库的台数相等｡商场新进空调多少台？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">15 * 8</gadget>
<output>120</output>

<result>120</result>