carry out the operation

(1.62 * 10^3) + (3.4 * 10^2)

If the answer is 1.96 10^3

HOw do I get there? what do I do?

Help plz

since multiplication is associative,

(1.62 * 10^3) + (3.4 * 10^2)
= (1.62 * 3.4) * (10^3 * 10^2)
= 5.508 * 10^5

I have no idea how you got your supposed answer.