The lamp factory plans to produce 180,000 lamps, and 12,000 lamps will be produced in the first 5 days, and the remaining 8 days will be completed. How many thousands of lamps should be produced on average every day? (solution with equations and arithmetic)
灯具厂计划生产灯具18万只，前5天生产1.2万只，剩下的要求8天完成，平均每天要生产多少万只？(用方程和算术方法解)
<gadget id="calculator">1.2 * 5</gadget>
<output>6</output>

<gadget id="calculator">18 - 6</gadget>
<output>12</output>

<gadget id="calculator">12 / 8</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>