Let's divide 89237006 by 231
The aim is to understand the frequency of 231 in 89237006.

Let's proceed to step 1:
When dividing 8 by 231, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 231

Moving on to step 2:
If we divide 89 by 231, we get 0 and a remainder of 89.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 89 to get 89.
Include the next digit (2) from the dividend after 89, then repeat: 892 / 231

On to step 3:
231 can be fit into 892 3 times, resulting in a remainder of 199.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 693 away from 892, we end up with 199.
Take the next digit (3) from the dividend and append it to 199, then repeat: 1993 / 231

Step 4:
If we divide 1993 by 231, we get 8 and a remainder of 145.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
Subtract 1848 from 1993 to get 145.
Include the next digit (7) from the dividend after 145, then repeat: 1457 / 231

Advancing to step 5:
1457 divided by 231 is 6 with a remainder of 71.
Record the quotient 6 as the next digit in the result. 
Result so far: 386.0
The remainder is 71 after subtracting 1386 from 1457.
Fetch the next digit (0) from the dividend, attach it to 71 and continue: 710 / 231

Step 6:
The number 231 fits into 710 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 3863.0
If we subtract 693 from 710, we get 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 231

Advancing to step 7:
When dividing 170 by 231, we get 0 with a remainder of 170.
Record the quotient 0 as the next digit in the result. 
Result so far: 38630.0
If we take 0 away from 170, we end up with 170.
Fetch the next digit (6) from the dividend, attach it to 170 and continue: 1706 / 231

Step 8:
231 can be fit into 1706 7 times, resulting in a remainder of 89.
Record the quotient 7 as the next digit in the result. 
Result so far: 386307.0
If we take 1617 away from 1706, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 9:
The number 231 fits into 890 3 times, leaving a remainder of 197.
Use 3 as the next digit of our solution. 
Result so far: 386307.3
Subtracting 693 from 890 leaves us with 197.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

Advancing to step 10:
231 goes into 1970 8 times with a remainder of 122.
The next digit of our result is 8. 
Result so far: 386307.38
Deduct 1848 from 1970 and we're left with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Moving on to step 11:
The number 231 fits into 1220 5 times, leaving a remainder of 65.
Put 5 as the next digit of the answer. 
Result so far: 386307.385
If we subtract 1155 from 1220, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 12:
231 goes into 650 2 times with a remainder of 188.
The number 2 becomes the next digit in our result. 
Result so far: 386307.3852
Subtract 462 from 650 to get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Advancing to step 13:
When dividing 1880 by 231, we get 8 with a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 386307.38528
The remainder is 32 after subtracting 1848 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 14:
231 goes into 320 1 times with a remainder of 89.
Use 1 as the next digit of our solution. 
Result so far: 386307.385281
The remainder is 89 after subtracting 231 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Advancing to step 15:
231 goes into 890 3 times with a remainder of 197.
Write down 3 as next digit of the result. 
Result so far: 386307.3852813
Subtracting 693 from 890 leaves us with 197.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

On to step 16:
231 goes into 1970 8 times with a remainder of 122.
Put 8 as the next digit of the answer. 
Result so far: 386307.38528138
If we subtract 1848 from 1970, we get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

After the division, we end up with 386307.38528138 and a remainder of 1.22e-07.