We're dividing 18366051 by 876 
The aim is to understand the frequency of 876 in 18366051.

Step 1:
If we divide 1 by 876, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 876

Moving on to step 2:
876 can be fit into 18 0 times, resulting in a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 876

Going ahead to step 3:
The number 876 fits into 183 0 times, leaving a remainder of 183.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 183 leaves us with 183.
Bring next digit (6) of the dividend behind the 183 and repeat the process: 1836 / 876

Let's proceed to step 4:
876 goes into 1836 2 times with a remainder of 84.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 1752 from 1836 and we're left with 84.
Take the next digit (6) from the dividend and append it to 84, then repeat: 846 / 876

Let's proceed to step 5:
The number 876 fits into 846 0 times, leaving a remainder of 846.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtract 0 from 846 to get 846.
Include the next digit (0) from the dividend after 846, then repeat: 8460 / 876

Moving on to step 6:
When dividing 8460 by 876, we get 9 with a remainder of 576.
The next digit of our result is 9. 
Result so far: 209.0
The remainder is 576 after subtracting 7884 from 8460.
Include the next digit (5) from the dividend after 576, then repeat: 5765 / 876

Moving on to step 7:
876 goes into 5765 6 times with a remainder of 509.
Put 6 as the next digit of the answer. 
Result so far: 2096.0
Subtracting 5256 from 5765 leaves us with 509.
Include the next digit (1) from the dividend after 509, then repeat: 5091 / 876

Let's proceed to step 8:
The number 876 fits into 5091 5 times, leaving a remainder of 711.
The number 5 becomes the next digit in our result. 
Result so far: 20965.0
If we subtract 4380 from 5091, we get 711.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7110, and continue the process.

Step 9:
When dividing 7110 by 876, we get 8 with a remainder of 102.
The next digit of our result is 8. 
Result so far: 20965.8
If we subtract 7008 from 7110, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Moving on to step 10:
The number 876 fits into 1020 1 times, leaving a remainder of 144.
The number 1 becomes the next digit in our result. 
Result so far: 20965.81
The remainder is 144 after subtracting 876 from 1020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Advancing to step 11:
When dividing 1440 by 876, we get 1 with a remainder of 564.
Put 1 as the next digit of the answer. 
Result so far: 20965.811
If we take 876 away from 1440, we end up with 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

Our division results in 20965.811 with a remaining 0.0564.