Question

How many times greater is 1 kilogram than 1 microgram?

a.     9
   10
b.    -9
   10
c.1/    9
      10
d.      8
    10

Answer 1

With simply shoving 1 KG into a KG to MCG calculator, I got 1.000000e+9µg

The following answer can be translated into 10^9

(also dude, the ^ key on your keyboard is the exponent key, it will save you a TON of time)

Answer 2

1 kilogram
1 * 10^3 gram

1 microgram
1 * 10^-3 gram

1 kilogram / 1 microgram
10^3 / 10^-3
10^6