We look at the division of 3699 by 57 
The aim is to understand the frequency of 57 in 3699.

Advancing to step 1:
3 divided by 57 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 57

Going ahead to step 2:
57 can be fit into 36 0 times, resulting in a remainder of 36.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 36 and we're left with 36.
Include the next digit (9) from the dividend after 36, then repeat: 369 / 57

Going ahead to step 3:
57 goes into 369 6 times with a remainder of 27.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 342 from 369 to get 27.
Include the next digit (9) from the dividend after 27, then repeat: 279 / 57

Going ahead to step 4:
If we divide 279 by 57, we get 4 and a remainder of 51.
Use 4 as the next digit of our solution. 
Result so far: 64.0
If we take 228 away from 279, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 5:
If we divide 510 by 57, we get 8 and a remainder of 54.
Record the quotient 8 as the next digit in the result. 
Result so far: 64.8
The remainder is 54 after subtracting 456 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 6:
When dividing 540 by 57, we get 9 with a remainder of 27.
The next digit of our result is 9. 
Result so far: 64.89
If we take 513 away from 540, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 7:
If we divide 270 by 57, we get 4 and a remainder of 42.
The next digit of our result is 4. 
Result so far: 64.894
Subtract 228 from 270 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 8:
The number 57 fits into 420 7 times, leaving a remainder of 21.
The number 7 becomes the next digit in our result. 
Result so far: 64.8947
Deduct 399 from 420 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 9:
The number 57 fits into 210 3 times, leaving a remainder of 39.
Record the quotient 3 as the next digit in the result. 
Result so far: 64.89473
Deduct 171 from 210 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 10:
When dividing 390 by 57, we get 6 with a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 64.894736
Deduct 342 from 390 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 11:
When dividing 480 by 57, we get 8 with a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 64.8947368
If we subtract 456 from 480, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 12:
240 divided by 57 is 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 64.89473684
If we subtract 228 from 240, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The quotient of the division is 64.89473684, and the remainder is 1.2e-08.