A dairy farm produces 17.9 tons of milk in January, and 2.3 times that in February, how many tons of milk is produced in two months?
一个奶牛场一月份产奶17.9吨，二月份产奶是一月份的2.3倍，二个月产奶多少吨．
<gadget id="calculator">17.9 * 2.3</gadget>
<output>41.17</output>

<result>41.17</result>