Dafeng Machinery Factory originally planned to produce 1,800 machine tools within one year. In the first three months, 480 units were actually produced. According to this calculation, how many units will the annual production exceed the original plan?
大丰机械厂原计划一年内生产机床1800台．前3个月实际生产了480台．照这样计算，全年生产的台数超过原计划多少台？
<gadget id="calculator">160 * 12</gadget>
<output>1_920</output>

<gadget id="calculator">1_920 - 1_800</gadget>
<output>120</output>

<result>120</result>