Let's divide 114877 by 21
The aim is to understand the frequency of 21 in 114877.

Advancing to step 1:
21 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 21

Advancing to step 2:
The number 21 fits into 11 0 times, leaving a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 11 leaves us with 11.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 21

Going ahead to step 3:
The number 21 fits into 114 5 times, leaving a remainder of 9.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 105 from 114 to get 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 21

Moving on to step 4:
21 goes into 98 4 times with a remainder of 14.
The next digit of our result is 4. 
Result so far: 54.0
Deduct 84 from 98 and we're left with 14.
Fetch the next digit (7) from the dividend, attach it to 14 and continue: 147 / 21

Advancing to step 5:
21 can be fit into 147 7 times, resulting in a remainder of 0.
The next digit of our result is 7. 
Result so far: 547.0
Deduct 147 from 147 and we're left with 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 21

Moving on to step 6:
When dividing 7 by 21, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 5470.0
If we take 0 away from 7, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
21 goes into 70 3 times with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 5470.3
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 8:
If we divide 70 by 21, we get 3 and a remainder of 7.
The next digit of our result is 3. 
Result so far: 5470.33
If we take 63 away from 70, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final outcome is 5470.33, with a leftover of 0.007.