16861312 divided by 212 
The aim is to understand the frequency of 212 in 16861312.

Going ahead to step 1:
When dividing 1 by 212, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 212

On to step 2:
16 divided by 212 is 0 with a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Append the next digit (8) from the dividend to 16 and continue with: 168 / 212

Going ahead to step 3:
212 goes into 168 0 times with a remainder of 168.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 168 and we're left with 168.
Append the next digit (6) from the dividend to 168 and continue with: 1686 / 212

Moving on to step 4:
1686 divided by 212 is 7 with a remainder of 202.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 202 after subtracting 1484 from 1686.
Take the next digit (1) from the dividend and append it to 202, then repeat: 2021 / 212

On to step 5:
2021 divided by 212 is 9 with a remainder of 113.
Write down 9 as next digit of the result. 
Result so far: 79.0
If we subtract 1908 from 2021, we get 113.
Bring next digit (3) of the dividend behind the 113 and repeat the process: 1133 / 212

Moving on to step 6:
If we divide 1133 by 212, we get 5 and a remainder of 73.
The next digit of our result is 5. 
Result so far: 795.0
Subtracting 1060 from 1133 leaves us with 73.
Append the next digit (1) from the dividend to 73 and continue with: 731 / 212

Advancing to step 7:
212 goes into 731 3 times with a remainder of 95.
Put 3 as the next digit of the answer. 
Result so far: 7953.0
Subtract 636 from 731 to get 95.
Append the next digit (2) from the dividend to 95 and continue with: 952 / 212

Step 8:
212 goes into 952 4 times with a remainder of 104.
The next digit of our result is 4. 
Result so far: 79534.0
Subtract 848 from 952 to get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

On to step 9:
212 goes into 1040 4 times with a remainder of 192.
The next digit of our result is 4. 
Result so far: 79534.4
Subtracting 848 from 1040 leaves us with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 10:
When dividing 1920 by 212, we get 9 with a remainder of 12.
Write down 9 as next digit of the result. 
Result so far: 79534.49
The remainder is 12 after subtracting 1908 from 1920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
212 can be fit into 120 0 times, resulting in a remainder of 120.
Use 0 as the next digit of our solution. 
Result so far: 79534.49
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 12:
212 goes into 1200 5 times with a remainder of 140.
Write down 5 as next digit of the result. 
Result so far: 79534.4905
Subtracting 1060 from 1200 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Step 13:
212 goes into 1400 6 times with a remainder of 128.
Write down 6 as next digit of the result. 
Result so far: 79534.49056
The remainder is 128 after subtracting 1272 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 14:
212 goes into 1280 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 79534.490566
Subtract 1272 from 1280 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 79534.490566 and a remainder of 8e-07.