Answer:
1/4000
1 milimeter on paper means 4000 in real
When you evaluate the problem you end up with 204100
Scientific Notation: 2.041 x 10^5
Whatever number is the exponent if negative just move it to the right how much the number is. if it 5 with an exponent of -3 then you just move the decimal point 3 times to the right. The anwer to that question would be .005