We look at the division of 43906713 by 877 
The aim is to understand the frequency of 877 in 43906713.

Advancing to step 1:
4 divided by 877 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 877

Going ahead to step 2:
If we divide 43 by 877, we get 0 and a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Bring next digit (9) of the dividend behind the 43 and repeat the process: 439 / 877

Going ahead to step 3:
439 divided by 877 is 0 with a remainder of 439.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 439, we end up with 439.
Include the next digit (0) from the dividend after 439, then repeat: 4390 / 877

Advancing to step 4:
When dividing 4390 by 877, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 4385 from 4390 and we're left with 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 877

Going ahead to step 5:
877 can be fit into 56 0 times, resulting in a remainder of 56.
The next digit of our result is 0. 
Result so far: 50.0
Deduct 0 from 56 and we're left with 56.
Take the next digit (7) from the dividend and append it to 56, then repeat: 567 / 877

Moving on to step 6:
567 divided by 877 is 0 with a remainder of 567.
Use 0 as the next digit of our solution. 
Result so far: 500.0
Subtract 0 from 567 to get 567.
Bring next digit (1) of the dividend behind the 567 and repeat the process: 5671 / 877

On to step 7:
If we divide 5671 by 877, we get 6 and a remainder of 409.
Record the quotient 6 as the next digit in the result. 
Result so far: 5006.0
Deduct 5262 from 5671 and we're left with 409.
Bring next digit (3) of the dividend behind the 409 and repeat the process: 4093 / 877

Let's proceed to step 8:
877 can be fit into 4093 4 times, resulting in a remainder of 585.
The next digit of our result is 4. 
Result so far: 50064.0
The remainder is 585 after subtracting 3508 from 4093.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

Advancing to step 9:
877 goes into 5850 6 times with a remainder of 588.
Record the quotient 6 as the next digit in the result. 
Result so far: 50064.6
If we take 5262 away from 5850, we end up with 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

Step 10:
If we divide 5880 by 877, we get 6 and a remainder of 618.
Use 6 as the next digit of our solution. 
Result so far: 50064.66
Deduct 5262 from 5880 and we're left with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

The final result is 50064.66 with a remainder of 0.618.