100020=
To solve this problem, we need to convert the fraction into a decimal.
Step 1: Recognize that dividing by 1000 is equivalent to moving the decimal point three places to the left in the number 20.
Step 2: When we perform this division directly, we calculate .
Since has effectively no decimal places to begin with, we must move three places left through zero to accommodate as a divisor:
Therefore, the decimal form of is .
Checking against the choices given, the correct answer is choice 2:
0.02
.Therefore, the solution to this problem is .
0.02