Answer:
18.9852
Explanation:
first multiply 3.651 by 10 raised to the power of positive 3, .... 3.651 * (10^3) which gives 3651
then multiply 5.2 by 10 raised to the power of positive 1,.... 5.2 * (10^1) which gives 52
multiply 3651 by 52 this gives 189825
then multiply this value by 10 raised to the power of negative 4 i.e, 189825 * (10^4) and this gives 18.9825
steps when writing
3.651 * (10^3) = 3651
5.2 * (10^1) = 52
3651 *52 = 189852
189852 *(10^-4)
18.9852 final answer
note
10^3 and 10^1 = 10^4
but in answer you have to do 10^-4