Simplify the expression $\frac{7800}{0.0003}$ using scientific notation and express your answer in scientific notation.

Step 1 ：Divide 7800 by 0.0003 to get the result.

Step 2 ：The result of the division is approximately 26000000.

Step 3 ：Convert the result into scientific notation.

Step 4 ：The scientific notation of 26000000 is \(2.60 \times 10^{7}\).

Step 5 ：Final Answer: \(\boxed{2.60 \times 10^{7}}\)