should be mils, not mills. meaning one-thousandth of. Still used in medicine as '10ml of the medicine each four hours.'
Ten of them.
.01
Penny
The answer depends on the units used for 1: penny or ounce, or even dollar or gram?
500
1/25
1/100
10 pennies in a time so a penny is 1/10 of a dime.
1/100
1/100
1/100 1/100
It represents 1/100.