691120 divided by 54 
The aim is to understand the frequency of 54 in 691120.

Moving on to step 1:
The number 54 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 54

Going ahead to step 2:
The number 54 fits into 69 1 times, leaving a remainder of 15.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 54 from 69, we get 15.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 54

Step 3:
When dividing 151 by 54, we get 2 with a remainder of 43.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Deduct 108 from 151 and we're left with 43.
Bring next digit (1) of the dividend behind the 43 and repeat the process: 431 / 54

Advancing to step 4:
54 can be fit into 431 7 times, resulting in a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
Subtracting 378 from 431 leaves us with 53.
Include the next digit (2) from the dividend after 53, then repeat: 532 / 54

On to step 5:
54 can be fit into 532 9 times, resulting in a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 1279.0
Subtract 486 from 532 to get 46.
Append the next digit (0) from the dividend to 46 and continue with: 460 / 54

Advancing to step 6:
If we divide 460 by 54, we get 8 and a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 12798.0
Subtract 432 from 460 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.

On to step 7:
When dividing 280 by 54, we get 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 12798.5
If we take 270 away from 280, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
54 can be fit into 100 1 times, resulting in a remainder of 46.
Use 1 as the next digit of our solution. 
Result so far: 12798.51
Subtract 54 from 100 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 9:
54 can be fit into 460 8 times, resulting in a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 12798.518
Subtract 432 from 460 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 10:
54 can be fit into 280 5 times, resulting in a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 12798.5185
If we take 270 away from 280, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 11:
54 goes into 100 1 times with a remainder of 46.
Write down 1 as next digit of the result. 
Result so far: 12798.51851
The remainder is 46 after subtracting 54 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 12:
When dividing 460 by 54, we get 8 with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 12798.518518
If we take 432 away from 460, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 13:
280 divided by 54 is 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 12798.5185185
The remainder is 10 after subtracting 270 from 280.
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 14:
54 goes into 100 1 times with a remainder of 46.
The number 1 becomes the next digit in our result. 
Result so far: 12798.51851851
Deduct 54 from 100 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final outcome is 12798.51851851, with a leftover of 4.6e-08.