According to statistics, the ratio of industrial and agricultural exports in the first quarter was 12:5, and the ratio of imports was 3:1. It is known that industrial exports in the first quarter were 12 billion yuan more than imports, and agricultural exports were more than imports. 6 billion yuan, how many billion yuan is the industrial export in the first quarter?
据统计，第一季度工业和农业出口额之比为12：5，进口额之比为3：1，已知第一季度工业出口额比进口额多120亿元，农业出口额比进口额多60亿元，则第一季度工业出口额为多少亿元．
<gadget id="calculator">60 * 3</gadget>
<output>180</output>

<gadget id="calculator">180 - 120</gadget>
<output>60</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">(5/12) * 3</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">60 / (1/4)</gadget>
<output>240</output>

<result>240</result>