We look at the division of 72151807 by 841 
The aim is to understand the frequency of 841 in 72151807.

Step 1:
When dividing 7 by 841, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 841

Moving on to step 2:
The number 841 fits into 72 0 times, leaving a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 841

Step 3:
841 goes into 721 0 times with a remainder of 721.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 721 leaves us with 721.
Take the next digit (5) from the dividend and append it to 721, then repeat: 7215 / 841

Going ahead to step 4:
841 goes into 7215 8 times with a remainder of 487.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 6728 from 7215 leaves us with 487.
Grab the next digit (1) from the dividend, add it to 487, then carry on: 4871 / 841

Let's proceed to step 5:
The number 841 fits into 4871 5 times, leaving a remainder of 666.
The next digit of our result is 5. 
Result so far: 85.0
Subtracting 4205 from 4871 leaves us with 666.
Fetch the next digit (8) from the dividend, attach it to 666 and continue: 6668 / 841

Advancing to step 6:
841 can be fit into 6668 7 times, resulting in a remainder of 781.
The number 7 becomes the next digit in our result. 
Result so far: 857.0
The remainder is 781 after subtracting 5887 from 6668.
Include the next digit (0) from the dividend after 781, then repeat: 7810 / 841

Advancing to step 7:
841 can be fit into 7810 9 times, resulting in a remainder of 241.
The next digit of our result is 9. 
Result so far: 8579.0
If we take 7569 away from 7810, we end up with 241.
Fetch the next digit (7) from the dividend, attach it to 241 and continue: 2417 / 841

Advancing to step 8:
If we divide 2417 by 841, we get 2 and a remainder of 735.
Use 2 as the next digit of our solution. 
Result so far: 85792.0
Subtract 1682 from 2417 to get 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

Let's proceed to step 9:
The number 841 fits into 7350 8 times, leaving a remainder of 622.
Put 8 as the next digit of the answer. 
Result so far: 85792.8
Subtracting 6728 from 7350 leaves us with 622.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6220, and continue the process.

Moving on to step 10:
841 can be fit into 6220 7 times, resulting in a remainder of 333.
The next digit of our result is 7. 
Result so far: 85792.87
If we take 5887 away from 6220, we end up with 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

On to step 11:
When dividing 3330 by 841, we get 3 with a remainder of 807.
Put 3 as the next digit of the answer. 
Result so far: 85792.873
Subtract 2523 from 3330 to get 807.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8070, and continue the process.

Step 12:
8070 divided by 841 is 9 with a remainder of 501.
The number 9 becomes the next digit in our result. 
Result so far: 85792.8739
The remainder is 501 after subtracting 7569 from 8070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

Let's proceed to step 13:
841 goes into 5010 5 times with a remainder of 805.
Write down 5 as next digit of the result. 
Result so far: 85792.87395
Subtract 4205 from 5010 to get 805.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8050, and continue the process.

Moving on to step 14:
8050 divided by 841 is 9 with a remainder of 481.
Record the quotient 9 as the next digit in the result. 
Result so far: 85792.873959
The remainder is 481 after subtracting 7569 from 8050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4810, and continue the process.

Moving on to step 15:
If we divide 4810 by 841, we get 5 and a remainder of 605.
Use 5 as the next digit of our solution. 
Result so far: 85792.8739595
If we take 4205 away from 4810, we end up with 605.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Going ahead to step 16:
841 goes into 6050 7 times with a remainder of 163.
Use 7 as the next digit of our solution. 
Result so far: 85792.87395957
The remainder is 163 after subtracting 5887 from 6050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

The final outcome is 85792.87395957, with a leftover of 1.63e-07.