A steel factory produced an average of 128 tons of steel per day in the first 8 days, and a total of 1560 tons in the next 12 days. How many tons of steel are produced on average per day?
某钢铁厂前8天平均每天生产钢铁128吨，后12天共生产1560吨，平均每天生产钢铁多少吨？
<gadget id="calculator">128 * 8</gadget>
<output>1_024</output>

<gadget id="calculator">1_024 + 1_560</gadget>
<output>2_584</output>

<gadget id="calculator">8 + 12</gadget>
<output>20</output>

<gadget id="calculator">2_584 / 20</gadget>
<output>646/5 = around 129.2</output>

<result>646/5 = around 129.2</result>