Unit Price
The unit price can be calculated by dividing the total price of n items by n:
Elizabeth sold n=12 bows for $12.12, so the unit price is:
$12.12 / 12
=$1.01
The cost of each bow is $1.01
The long division requires us to arrange the number like:
12 | 12.12
The division starts by dividing 12 (of the dividend 12.12) by 12 (the divisor). We get 1. It must be placed atop the dividend::
| 1
12 | 12.12
Now multiply 1x12 and subtract from the dividend:
| 1
12 | 12.12
| -12
|----------
| 0.12
We have found the decimal point. Remove it and add it to the quotient.
| 1.
12 | 12.12
| -12
|----------
| 12
Divide 1 by 12. It's not possible, so we add a 0 to the quotient:
| 1.0
12 | 12.12
| -12
|----------
| 12
Now we divide 12 by 12 again and get 1. This is added to the quotient and subtract 1*12 from the dividend:
| 1.01
12 | 12.12
| -12
|----------
| 12
| -12
| ---------
| 0
The remainder is 0 and the quotient is 1.01