We look at the division of 53855900 by 791 
The aim is to understand the frequency of 791 in 53855900.

Advancing to step 1:
When dividing 5 by 791, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 791

Moving on to step 2:
791 goes into 53 0 times with a remainder of 53.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 53 to get 53.
Include the next digit (8) from the dividend after 53, then repeat: 538 / 791

Let's proceed to step 3:
538 divided by 791 is 0 with a remainder of 538.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 538, we end up with 538.
Take the next digit (5) from the dividend and append it to 538, then repeat: 5385 / 791

Step 4:
791 goes into 5385 6 times with a remainder of 639.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 4746 away from 5385, we end up with 639.
Append the next digit (5) from the dividend to 639 and continue with: 6395 / 791

Let's proceed to step 5:
6395 divided by 791 is 8 with a remainder of 67.
The next digit of our result is 8. 
Result so far: 68.0
If we take 6328 away from 6395, we end up with 67.
Grab the next digit (9) from the dividend, add it to 67, then carry on: 679 / 791

Step 6:
When dividing 679 by 791, we get 0 with a remainder of 679.
Use 0 as the next digit of our solution. 
Result so far: 680.0
If we subtract 0 from 679, we get 679.
Append the next digit (0) from the dividend to 679 and continue with: 6790 / 791

On to step 7:
791 goes into 6790 8 times with a remainder of 462.
Record the quotient 8 as the next digit in the result. 
Result so far: 6808.0
The remainder is 462 after subtracting 6328 from 6790.
Append the next digit (0) from the dividend to 462 and continue with: 4620 / 791

Let's proceed to step 8:
The number 791 fits into 4620 5 times, leaving a remainder of 665.
Put 5 as the next digit of the answer. 
Result so far: 68085.0
Deduct 3955 from 4620 and we're left with 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

Moving on to step 9:
791 goes into 6650 8 times with a remainder of 322.
The next digit of our result is 8. 
Result so far: 68085.8
If we subtract 6328 from 6650, we get 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

Let's proceed to step 10:
The number 791 fits into 3220 4 times, leaving a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 68085.84
The remainder is 56 after subtracting 3164 from 3220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 11:
560 divided by 791 is 0 with a remainder of 560.
Use 0 as the next digit of our solution. 
Result so far: 68085.84
If we take 0 away from 560, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 12:
791 goes into 5600 7 times with a remainder of 63.
Put 7 as the next digit of the answer. 
Result so far: 68085.8407
The remainder is 63 after subtracting 5537 from 5600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 13:
If we divide 630 by 791, we get 0 and a remainder of 630.
The next digit of our result is 0. 
Result so far: 68085.8407
If we subtract 0 from 630, we get 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Step 14:
791 can be fit into 6300 7 times, resulting in a remainder of 763.
Use 7 as the next digit of our solution. 
Result so far: 68085.840707
If we subtract 5537 from 6300, we get 763.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7630, and continue the process.

Let's proceed to step 15:
7630 divided by 791 is 9 with a remainder of 511.
Use 9 as the next digit of our solution. 
Result so far: 68085.8407079
Deduct 7119 from 7630 and we're left with 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

On to step 16:
5110 divided by 791 is 6 with a remainder of 364.
Record the quotient 6 as the next digit in the result. 
Result so far: 68085.84070796
Subtract 4746 from 5110 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

The final outcome is 68085.84070796, with a leftover of 3.64e-07.