71866571 ÷ 234 
The aim is to understand the frequency of 234 in 71866571.

Advancing to step 1:
234 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 234

Going ahead to step 2:
If we divide 71 by 234, we get 0 and a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 71 to get 71.
Fetch the next digit (8) from the dividend, attach it to 71 and continue: 718 / 234

Let's proceed to step 3:
234 goes into 718 3 times with a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 702 from 718 and we're left with 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 234

Let's proceed to step 4:
234 can be fit into 166 0 times, resulting in a remainder of 166.
Write down 0 as next digit of the result. 
Result so far: 30.0
If we subtract 0 from 166, we get 166.
Take the next digit (6) from the dividend and append it to 166, then repeat: 1666 / 234

Let's proceed to step 5:
234 can be fit into 1666 7 times, resulting in a remainder of 28.
Use 7 as the next digit of our solution. 
Result so far: 307.0
If we subtract 1638 from 1666, we get 28.
Fetch the next digit (5) from the dividend, attach it to 28 and continue: 285 / 234

On to step 6:
285 divided by 234 is 1 with a remainder of 51.
Put 1 as the next digit of the answer. 
Result so far: 3071.0
If we take 234 away from 285, we end up with 51.
Bring next digit (7) of the dividend behind the 51 and repeat the process: 517 / 234

Advancing to step 7:
234 can be fit into 517 2 times, resulting in a remainder of 49.
Use 2 as the next digit of our solution. 
Result so far: 30712.0
The remainder is 49 after subtracting 468 from 517.
Include the next digit (1) from the dividend after 49, then repeat: 491 / 234

Going ahead to step 8:
If we divide 491 by 234, we get 2 and a remainder of 23.
Put 2 as the next digit of the answer. 
Result so far: 307122.0
Subtracting 468 from 491 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
234 goes into 230 0 times with a remainder of 230.
Put 0 as the next digit of the answer. 
Result so far: 307122.0
If we take 0 away from 230, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Moving on to step 10:
When dividing 2300 by 234, we get 9 with a remainder of 194.
Write down 9 as next digit of the result. 
Result so far: 307122.09
Deduct 2106 from 2300 and we're left with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Moving on to step 11:
234 goes into 1940 8 times with a remainder of 68.
The number 8 becomes the next digit in our result. 
Result so far: 307122.098
If we subtract 1872 from 1940, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Let's proceed to step 12:
234 can be fit into 680 2 times, resulting in a remainder of 212.
The number 2 becomes the next digit in our result. 
Result so far: 307122.0982
The remainder is 212 after subtracting 468 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Advancing to step 13:
When dividing 2120 by 234, we get 9 with a remainder of 14.
Record the quotient 9 as the next digit in the result. 
Result so far: 307122.09829
The remainder is 14 after subtracting 2106 from 2120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 14:
234 goes into 140 0 times with a remainder of 140.
Record the quotient 0 as the next digit in the result. 
Result so far: 307122.09829
Deduct 0 from 140 and we're left 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.

Moving on to step 15:
234 goes into 1400 5 times with a remainder of 230.
The number 5 becomes the next digit in our result. 
Result so far: 307122.0982905
If we subtract 1170 from 1400, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 16:
The number 234 fits into 2300 9 times, leaving a remainder of 194.
Write down 9 as next digit of the result. 
Result so far: 307122.09829059
If we subtract 2106 from 2300, we get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

The final outcome is 307122.09829059, with a leftover of 1.94e-07.