There is still 3 1 day in March, and it has been sold.

60×3 1= 1860 (box)

2、

The second section has

30+3 1+30=9 1 (days)

* * * Save water

13× 91=1183 (ton)

3、

There are three months in the first quarter, and the average monthly output of chemical fertilizer.

96÷3=32 (ton)