12039323 ÷ 212 
The aim is to understand the frequency of 212 in 12039323.

Going ahead to step 1:
If we divide 1 by 212, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 212

Advancing to step 2:
212 goes into 12 0 times with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 212

On to step 3:
212 can be fit into 120 0 times, resulting in a remainder of 120.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 120, we get 120.
Fetch the next digit (3) from the dividend, attach it to 120 and continue: 1203 / 212

Let's proceed to step 4:
When dividing 1203 by 212, we get 5 with a remainder of 143.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 1060 from 1203, we get 143.
Fetch the next digit (9) from the dividend, attach it to 143 and continue: 1439 / 212

Going ahead to step 5:
If we divide 1439 by 212, we get 6 and a remainder of 167.
Write down 6 as next digit of the result. 
Result so far: 56.0
If we take 1272 away from 1439, we end up with 167.
Grab the next digit (3) from the dividend, add it to 167, then carry on: 1673 / 212

Step 6:
212 goes into 1673 7 times with a remainder of 189.
Use 7 as the next digit of our solution. 
Result so far: 567.0
If we subtract 1484 from 1673, we get 189.
Append the next digit (2) from the dividend to 189 and continue with: 1892 / 212

Going ahead to step 7:
212 can be fit into 1892 8 times, resulting in a remainder of 196.
Record the quotient 8 as the next digit in the result. 
Result so far: 5678.0
Subtracting 1696 from 1892 leaves us with 196.
Take the next digit (3) from the dividend and append it to 196, then repeat: 1963 / 212

Moving on to step 8:
When dividing 1963 by 212, we get 9 with a remainder of 55.
Use 9 as the next digit of our solution. 
Result so far: 56789.0
Subtract 1908 from 1963 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 9:
550 divided by 212 is 2 with a remainder of 126.
Write down 2 as next digit of the result. 
Result so far: 56789.2
Deduct 424 from 550 and we're left with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Going ahead to step 10:
When dividing 1260 by 212, we get 5 with a remainder of 200.
Put 5 as the next digit of the answer. 
Result so far: 56789.25
Subtracting 1060 from 1260 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 11:
The number 212 fits into 2000 9 times, leaving a remainder of 92.
Write down 9 as next digit of the result. 
Result so far: 56789.259
Subtract 1908 from 2000 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 12:
When dividing 920 by 212, we get 4 with a remainder of 72.
Write down 4 as next digit of the result. 
Result so far: 56789.2594
Subtract 848 from 920 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 13:
If we divide 720 by 212, we get 3 and a remainder of 84.
Put 3 as the next digit of the answer. 
Result so far: 56789.25943
The remainder is 84 after subtracting 636 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 14:
840 divided by 212 is 3 with a remainder of 204.
Use 3 as the next digit of our solution. 
Result so far: 56789.259433
Subtract 636 from 840 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

The final result is 56789.259433 with a remainder of 2.04e-05.