The final result in standard scientific notation is
.
Let's solve the expression (3.5 x 10^2) * (5.8 x 10^-9) step by step.
1. Multiply the coefficients (numbers outside the powers of 10):
.
2. Multiply the powers of 10:

3. Combine the results from steps 1 and 2:

So, the final result in standard scientific notation is
.
The probable question can be:
Calculate the product of (3.5 x 10^2) and (5.8 x 10^-9), expressing the result in standard scientific notation.