43474580 divided by 866 
The aim is to understand the frequency of 866 in 43474580.

Going ahead to step 1:
When dividing 4 by 866, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 866

Moving on to step 2:
When dividing 43 by 866, we get 0 with a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Include the next digit (4) from the dividend after 43, then repeat: 434 / 866

Advancing to step 3:
866 goes into 434 0 times with a remainder of 434.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 434, we end up with 434.
Fetch the next digit (7) from the dividend, attach it to 434 and continue: 4347 / 866

Let's proceed to step 4:
4347 divided by 866 is 5 with a remainder of 17.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 4330 from 4347 to get 17.
Include the next digit (4) from the dividend after 17, then repeat: 174 / 866

Step 5:
The number 866 fits into 174 0 times, leaving a remainder of 174.
Put 0 as the next digit of the answer. 
Result so far: 50.0
If we subtract 0 from 174, we get 174.
Append the next digit (5) from the dividend to 174 and continue with: 1745 / 866

Let's proceed to step 6:
The number 866 fits into 1745 2 times, leaving a remainder of 13.
Use 2 as the next digit of our solution. 
Result so far: 502.0
Deduct 1732 from 1745 and we're left with 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 866

Let's proceed to step 7:
138 divided by 866 is 0 with a remainder of 138.
Record the quotient 0 as the next digit in the result. 
Result so far: 5020.0
Subtracting 0 from 138 leaves us with 138.
Bring next digit (0) of the dividend behind the 138 and repeat the process: 1380 / 866

Moving on to step 8:
866 can be fit into 1380 1 times, resulting in a remainder of 514.
Use 1 as the next digit of our solution. 
Result so far: 50201.0
Subtract 866 from 1380 to get 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Going ahead to step 9:
866 goes into 5140 5 times with a remainder of 810.
Put 5 as the next digit of the answer. 
Result so far: 50201.5
Deduct 4330 from 5140 and we're left with 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8100, and continue the process.

Let's proceed to step 10:
8100 divided by 866 is 9 with a remainder of 306.
Use 9 as the next digit of our solution. 
Result so far: 50201.59
If we subtract 7794 from 8100, we get 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

On to step 11:
866 goes into 3060 3 times with a remainder of 462.
The number 3 becomes the next digit in our result. 
Result so far: 50201.593
If we subtract 2598 from 3060, we get 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Moving on to step 12:
866 can be fit into 4620 5 times, resulting in a remainder of 290.
Put 5 as the next digit of the answer. 
Result so far: 50201.5935
The remainder is 290 after subtracting 4330 from 4620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 13:
866 goes into 2900 3 times with a remainder of 302.
Write down 3 as next digit of the result. 
Result so far: 50201.59353
Subtracting 2598 from 2900 leaves us with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Let's proceed to step 14:
If we divide 3020 by 866, we get 3 and a remainder of 422.
Write down 3 as next digit of the result. 
Result so far: 50201.593533
The remainder is 422 after subtracting 2598 from 3020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

After the division, we end up with 50201.593533 and a remainder of 4.22e-05.