74368421 divided by 231 
The aim is to understand the frequency of 231 in 74368421.

On to step 1:
The number 231 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 231

Moving on to step 2:
74 divided by 231 is 0 with a remainder of 74.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 74, we get 74.
Fetch the next digit (3) from the dividend, attach it to 74 and continue: 743 / 231

Going ahead to step 3:
When dividing 743 by 231, we get 3 with a remainder of 50.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 693 from 743 to get 50.
Bring next digit (6) of the dividend behind the 50 and repeat the process: 506 / 231

Step 4:
231 goes into 506 2 times with a remainder of 44.
The number 2 becomes the next digit in our result. 
Result so far: 32.0
Subtract 462 from 506 to get 44.
Fetch the next digit (8) from the dividend, attach it to 44 and continue: 448 / 231

Let's proceed to step 5:
231 goes into 448 1 times with a remainder of 217.
The number 1 becomes the next digit in our result. 
Result so far: 321.0
The remainder is 217 after subtracting 231 from 448.
Bring next digit (4) of the dividend behind the 217 and repeat the process: 2174 / 231

Step 6:
231 can be fit into 2174 9 times, resulting in a remainder of 95.
The number 9 becomes the next digit in our result. 
Result so far: 3219.0
If we subtract 2079 from 2174, we get 95.
Append the next digit (2) from the dividend to 95 and continue with: 952 / 231

On to step 7:
When dividing 952 by 231, we get 4 with a remainder of 28.
The next digit of our result is 4. 
Result so far: 32194.0
Deduct 924 from 952 and we're left with 28.
Include the next digit (1) from the dividend after 28, then repeat: 281 / 231

Going ahead to step 8:
The number 231 fits into 281 1 times, leaving a remainder of 50.
Use 1 as the next digit of our solution. 
Result so far: 321941.0
If we take 231 away from 281, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 9:
500 divided by 231 is 2 with a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 321941.2
If we take 462 away from 500, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 10:
231 can be fit into 380 1 times, resulting in a remainder of 149.
Use 1 as the next digit of our solution. 
Result so far: 321941.21
If we take 231 away from 380, we end up with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Step 11:
The number 231 fits into 1490 6 times, leaving a remainder of 104.
Put 6 as the next digit of the answer. 
Result so far: 321941.216
Subtracting 1386 from 1490 leaves us with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 12:
231 goes into 1040 4 times with a remainder of 116.
The next digit of our result is 4. 
Result so far: 321941.2164
If we take 924 away from 1040, we end up with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 13:
When dividing 1160 by 231, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 321941.21645
Subtract 1155 from 1160 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 14:
231 goes into 50 0 times with a remainder of 50.
The next digit of our result is 0. 
Result so far: 321941.21645
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 15:
When dividing 500 by 231, we get 2 with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 321941.2164502
Subtracting 462 from 500 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 16:
231 goes into 380 1 times with a remainder of 149.
The number 1 becomes the next digit in our result. 
Result so far: 321941.21645021
If we take 231 away from 380, we end up with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Our division results in 321941.21645021 with a remaining 1.49e-07.