We look at the division of 841666 by 57 
The aim is to understand the frequency of 57 in 841666.

Step 1:
57 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 57

Moving on to step 2:
84 divided by 57 is 1 with a remainder of 27.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 57 away from 84, we end up with 27.
Bring next digit (1) of the dividend behind the 27 and repeat the process: 271 / 57

Going ahead to step 3:
57 goes into 271 4 times with a remainder of 43.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we take 228 away from 271, we end up with 43.
Take the next digit (6) from the dividend and append it to 43, then repeat: 436 / 57

Step 4:
57 can be fit into 436 7 times, resulting in a remainder of 37.
The next digit of our result is 7. 
Result so far: 147.0
If we take 399 away from 436, we end up with 37.
Include the next digit (6) from the dividend after 37, then repeat: 376 / 57

Step 5:
57 goes into 376 6 times with a remainder of 34.
Write down 6 as next digit of the result. 
Result so far: 1476.0
If we take 342 away from 376, we end up with 34.
Append the next digit (6) from the dividend to 34 and continue with: 346 / 57

Going ahead to step 6:
If we divide 346 by 57, we get 6 and a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 14766.0
If we take 342 away from 346, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
57 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 14766.0
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
If we divide 400 by 57, we get 7 and a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 14766.07
Deduct 399 from 400 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
57 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 14766.07
Subtracting 0 from 10 leaves us 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.

Let's proceed to step 10:
When dividing 100 by 57, we get 1 with a remainder of 43.
Put 1 as the next digit of the answer. 
Result so far: 14766.0701
If we take 57 away from 100, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 11:
430 divided by 57 is 7 with a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 14766.07017
If we subtract 399 from 430, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 12:
57 goes into 310 5 times with a remainder of 25.
The next digit of our result is 5. 
Result so far: 14766.070175
The remainder is 25 after subtracting 285 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 13:
If we divide 250 by 57, we get 4 and a remainder of 22.
The next digit of our result is 4. 
Result so far: 14766.0701754
If we take 228 away from 250, 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.

Step 14:
57 goes into 220 3 times with a remainder of 49.
Record the quotient 3 as the next digit in the result. 
Result so far: 14766.07017543
If we take 171 away from 220, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

After the division, we end up with 14766.07017543 and a remainder of 4.9e-08.