The food factory produced 5.8 tons of biscuits in January, and every month thereafter produced 0.2 tons more than the previous month. How many tons of biscuits did the food factory produce in March and April?
食品厂一月份生产饼干5.8吨，以后每月都比前一个月多生产0.2吨，这个食品厂三月份和四月份共生产饼干多少吨？
<gadget id="calculator">5.8 + 0.2 + 0.2</gadget>
<output>6.2</output>

<gadget id="calculator">6.2 + 0.2</gadget>
<output>6.4</output>

<gadget id="calculator">6.2 + 6.4</gadget>
<output>12.6</output>

<result>12.6</result>