Step 1: Move the decimal point from its current position (the black dot) to a position immediately to the right of the first nonzero digit (the red dot).
5.6784.005
Step 2: We moved the decimal point 4 spaces to the right. Therefore, the exponent on base 10 will be positive 4.Now we know that the:
Mantissa = 5.6784005
Exponent = 4
So, the solution is:
$$56784.005 = \color{blue}{ 5.6784005} \cdot 10^{ \color{red}{ 4 }}$$