We divide 169168 by 21
The aim is to understand the frequency of 21 in 169168.

Moving on to step 1:
If we divide 1 by 21, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 21

Let's proceed to step 2:
The number 21 fits into 16 0 times, leaving a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Include the next digit (9) from the dividend after 16, then repeat: 169 / 21

Step 3:
The number 21 fits into 169 8 times, leaving a remainder of 1.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 168 from 169 leaves us with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 21

Step 4:
21 can be fit into 11 0 times, resulting in a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 80.0
If we take 0 away from 11, we end up with 11.
Append the next digit (6) from the dividend to 11 and continue with: 116 / 21

Going ahead to step 5:
When dividing 116 by 21, we get 5 with a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 805.0
Subtracting 105 from 116 leaves us with 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 21

Going ahead to step 6:
When dividing 118 by 21, we get 5 with a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 8055.0
The remainder is 13 after subtracting 105 from 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 7:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 8055.6
Subtracting 126 from 130 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 8:
21 goes into 40 1 times with a remainder of 19.
The next digit of our result is 1. 
Result so far: 8055.61
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 9:
If we divide 190 by 21, we get 9 and a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 8055.619
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 10:
21 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 8055.619
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
100 divided by 21 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 8055.61904
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 12:
160 divided by 21 is 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 8055.619047
If we take 147 away from 160, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 13:
130 divided by 21 is 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 8055.6190476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 14:
When dividing 40 by 21, we get 1 with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 8055.61904761
Subtracting 21 from 40 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final result is 8055.61904761 with a remainder of 1.9e-08.