Let's divide 87129019 by 212
The aim is to understand the frequency of 212 in 87129019.

Advancing to step 1:
8 divided by 212 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 212

On to step 2:
When dividing 87 by 212, we get 0 with a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Bring next digit (1) of the dividend behind the 87 and repeat the process: 871 / 212

Advancing to step 3:
The number 212 fits into 871 4 times, leaving a remainder of 23.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 848 from 871 leaves us with 23.
Append the next digit (2) from the dividend to 23 and continue with: 232 / 212

Going ahead to step 4:
212 can be fit into 232 1 times, resulting in a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 41.0
Deduct 212 from 232 and we're left with 20.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 212

On to step 5:
If we divide 209 by 212, we get 0 and a remainder of 209.
Record the quotient 0 as the next digit in the result. 
Result so far: 410.0
Subtracting 0 from 209 leaves us with 209.
Append the next digit (0) from the dividend to 209 and continue with: 2090 / 212

Going ahead to step 6:
When dividing 2090 by 212, we get 9 with a remainder of 182.
Put 9 as the next digit of the answer. 
Result so far: 4109.0
If we subtract 1908 from 2090, we get 182.
Include the next digit (1) from the dividend after 182, then repeat: 1821 / 212

Going ahead to step 7:
If we divide 1821 by 212, we get 8 and a remainder of 125.
Use 8 as the next digit of our solution. 
Result so far: 41098.0
Subtract 1696 from 1821 to get 125.
Include the next digit (9) from the dividend after 125, then repeat: 1259 / 212

Let's proceed to step 8:
1259 divided by 212 is 5 with a remainder of 199.
Write down 5 as next digit of the result. 
Result so far: 410985.0
If we take 1060 away from 1259, we end up with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Moving on to step 9:
When dividing 1990 by 212, we get 9 with a remainder of 82.
Use 9 as the next digit of our solution. 
Result so far: 410985.9
Subtract 1908 from 1990 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 10:
212 goes into 820 3 times with a remainder of 184.
Write down 3 as next digit of the result. 
Result so far: 410985.93
The remainder is 184 after subtracting 636 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Advancing to step 11:
When dividing 1840 by 212, we get 8 with a remainder of 144.
Record the quotient 8 as the next digit in the result. 
Result so far: 410985.938
Subtracting 1696 from 1840 leaves us with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 12:
If we divide 1440 by 212, we get 6 and a remainder of 168.
Record the quotient 6 as the next digit in the result. 
Result so far: 410985.9386
Subtracting 1272 from 1440 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Step 13:
1680 divided by 212 is 7 with a remainder of 196.
Put 7 as the next digit of the answer. 
Result so far: 410985.93867
If we take 1484 away from 1680, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Let's proceed to step 14:
212 goes into 1960 9 times with a remainder of 52.
The number 9 becomes the next digit in our result. 
Result so far: 410985.938679
Deduct 1908 from 1960 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 15:
When dividing 520 by 212, we get 2 with a remainder of 96.
Put 2 as the next digit of the answer. 
Result so far: 410985.9386792
If we take 424 away from 520, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 16:
The number 212 fits into 960 4 times, leaving a remainder of 112.
Use 4 as the next digit of our solution. 
Result so far: 410985.93867924
Subtract 848 from 960 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

After the division, we end up with 410985.93867924 and a remainder of 1.12e-07.