We divide 20001 by 68
The aim is to understand the frequency of 68 in 20001.

On to step 1:
68 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 68

On to step 2:
If we divide 20 by 68, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Include the next digit (0) from the dividend after 20, then repeat: 200 / 68

On to step 3:
If we divide 200 by 68, we get 2 and a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 136 from 200 and we're left with 64.
Include the next digit (0) from the dividend after 64, then repeat: 640 / 68

Going ahead to step 4:
68 can be fit into 640 9 times, resulting in a remainder of 28.
Write down 9 as next digit of the result. 
Result so far: 29.0
Subtract 612 from 640 to get 28.
Append the next digit (1) from the dividend to 28 and continue with: 281 / 68

Step 5:
68 goes into 281 4 times with a remainder of 9.
The next digit of our result is 4. 
Result so far: 294.0
If we take 272 away from 281, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 6:
90 divided by 68 is 1 with a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 294.1
If we take 68 away from 90, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 7:
If we divide 220 by 68, we get 3 and a remainder of 16.
Put 3 as the next digit of the answer. 
Result so far: 294.13
Subtracting 204 from 220 leaves us with 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 8:
If we divide 160 by 68, we get 2 and a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 294.132
Subtracting 136 from 160 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 9:
If we divide 240 by 68, we get 3 and a remainder of 36.
Record the quotient 3 as the next digit in the result. 
Result so far: 294.1323
Subtract 204 from 240 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
When dividing 360 by 68, we get 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 294.13235
If we subtract 340 from 360, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
68 goes into 200 2 times with a remainder of 64.
Record the quotient 2 as the next digit in the result. 
Result so far: 294.132352
Deduct 136 from 200 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 12:
If we divide 640 by 68, we get 9 and a remainder of 28.
Write down 9 as next digit of the result. 
Result so far: 294.1323529
Subtract 612 from 640 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 13:
68 can be fit into 280 4 times, resulting in a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 294.13235294
If we subtract 272 from 280, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 294.13235294 and a remainder of 8e-09.