Huaian Food Factory produced 4.5 tons of biscuits in January, and every month thereafter produced 0.25 tons more than the previous month. How many tons of biscuits did the food factory produce in the first quarter?
淮安食品厂一月份生产饼干4.5吨，以后每个月都比前一个月多生产0.25吨．这个食品厂第一季度一共生产饼干多少吨？
<gadget id="calculator">0.25 * 2</gadget>
<output>0.5</output>

<gadget id="calculator">4.5 + 4.5 + 0.25 + 4.5 + 0.5</gadget>
<output>14.25</output>

<result>14.25</result>