A water desalination plant can produce $2.6 \times 10^{6}$ gallons of water in one day. How many gallons can it produce in 9 days Write your answer in scientific notation. $\square$ gallons $\square \times 10^{\square}$

Step 1 ：The problem is asking for the total amount of water that the plant can produce in 9 days. Since we know the amount of water it can produce in one day, we can simply multiply this amount by 9 to get the total amount for 9 days.

Step 2 ：The total production of water in 9 days is 23400000.0 gallons. However, the question asks for the answer in scientific notation. We need to convert this number into scientific notation.

Step 3 ：Final Answer: The water desalination plant can produce \( \boxed{2.34 \times 10^{7}} \) gallons of water in 9 days.