We look at the division of 21239111 by 320 
We want to divide 21239111 by 320.

Advancing to step 1:
If we divide 2 by 320, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 320

Step 2:
The number 320 fits into 21 0 times, leaving a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Include the next digit (2) from the dividend after 21, then repeat: 212 / 320

Let's proceed to step 3:
The number 320 fits into 212 0 times, leaving a remainder of 212.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 212 after subtracting 0 from 212.
Grab the next digit (3) from the dividend, add it to 212, then carry on: 2123 / 320

Advancing to step 4:
When dividing 2123 by 320, we get 6 with a remainder of 203.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 1920 from 2123 to get 203.
Fetch the next digit (9) from the dividend, attach it to 203 and continue: 2039 / 320

Step 5:
If we divide 2039 by 320, we get 6 and a remainder of 119.
Put 6 as the next digit of the answer. 
Result so far: 66.0
Subtract 1920 from 2039 to get 119.
Include the next digit (1) from the dividend after 119, then repeat: 1191 / 320

Going ahead to step 6:
When dividing 1191 by 320, we get 3 with a remainder of 231.
Put 3 as the next digit of the answer. 
Result so far: 663.0
Deduct 960 from 1191 and we're left with 231.
Include the next digit (1) from the dividend after 231, then repeat: 2311 / 320

Let's proceed to step 7:
If we divide 2311 by 320, we get 7 and a remainder of 71.
Write down 7 as next digit of the result. 
Result so far: 6637.0
The remainder is 71 after subtracting 2240 from 2311.
Fetch the next digit (1) from the dividend, attach it to 71 and continue: 711 / 320

Advancing to step 8:
320 can be fit into 711 2 times, resulting in a remainder of 71.
Write down 2 as next digit of the result. 
Result so far: 66372.0
The remainder is 71 after subtracting 640 from 711.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 9:
When dividing 710 by 320, we get 2 with a remainder of 70.
The next digit of our result is 2. 
Result so far: 66372.2
Subtracting 640 from 710 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
320 goes into 700 2 times with a remainder of 60.
The next digit of our result is 2. 
Result so far: 66372.22
If we subtract 640 from 700, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 66372.22, with a leftover of 0.06.