We look at the division of 123209 by 57 
We want to figure out the number of times 123209 can be divided by 57.

Step 1:
When dividing 1 by 57, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 57

Let's proceed to step 2:
If we divide 12 by 57, we get 0 and a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Take the next digit (3) from the dividend and append it to 12, then repeat: 123 / 57

On to step 3:
When dividing 123 by 57, we get 2 with a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 114 away from 123, we end up with 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 57

Advancing to step 4:
57 goes into 92 1 times with a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
If we take 57 away from 92, we end up with 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 57

Advancing to step 5:
When dividing 350 by 57, we get 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 216.0
Subtract 342 from 350 to get 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 57

Step 6:
The number 57 fits into 89 1 times, leaving a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 2161.0
Deduct 57 from 89 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 7:
When dividing 320 by 57, we get 5 with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 2161.5
If we subtract 285 from 320, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 8:
The number 57 fits into 350 6 times, leaving a remainder of 8.
The next digit of our result is 6. 
Result so far: 2161.56
Subtracting 342 from 350 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
When dividing 80 by 57, we get 1 with a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 2161.561
If we subtract 57 from 80, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 10:
The number 57 fits into 230 4 times, leaving a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 2161.5614
Deduct 228 from 230 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 11:
57 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 2161.5614
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 12:
57 goes into 200 3 times with a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 2161.561403
If we take 171 away from 200, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 13:
57 can be fit into 290 5 times, resulting in a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 2161.5614035
The remainder is 5 after subtracting 285 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 14:
If we divide 50 by 57, we get 0 and a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 2161.5614035
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final result is 2161.5614035 with a remainder of 5e-08.