We look at the division of 993887 by 57 
The aim is to understand the frequency of 57 in 993887.

Let's proceed to step 1:
9 divided by 57 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 57

Going ahead to step 2:
57 goes into 99 1 times with a remainder of 42.
The next digit of our result is 1. 
Result so far: 1.0
If we take 57 away from 99, we end up with 42.
Bring next digit (3) of the dividend behind the 42 and repeat the process: 423 / 57

Moving on to step 3:
423 divided by 57 is 7 with a remainder of 24.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
If we take 399 away from 423, we end up with 24.
Take the next digit (8) from the dividend and append it to 24, then repeat: 248 / 57

Advancing to step 4:
248 divided by 57 is 4 with a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 174.0
If we take 228 away from 248, we end up with 20.
Bring next digit (8) of the dividend behind the 20 and repeat the process: 208 / 57

Let's proceed to step 5:
208 divided by 57 is 3 with a remainder of 37.
The next digit of our result is 3. 
Result so far: 1743.0
Deduct 171 from 208 and we're left with 37.
Fetch the next digit (7) from the dividend, attach it to 37 and continue: 377 / 57

Going ahead to step 6:
If we divide 377 by 57, we get 6 and a remainder of 35.
The number 6 becomes the next digit in our result. 
Result so far: 17436.0
Subtracting 342 from 377 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 7:
If we divide 350 by 57, we get 6 and a remainder of 8.
The next digit of our result is 6. 
Result so far: 17436.6
If we take 342 away from 350, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
80 divided by 57 is 1 with a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 17436.61
If we take 57 away from 80, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 9:
If we divide 230 by 57, we get 4 and a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 17436.614
Subtract 228 from 230 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 10:
The number 57 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 17436.614
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
If we divide 200 by 57, we get 3 and a remainder of 29.
The number 3 becomes the next digit in our result. 
Result so far: 17436.61403
Deduct 171 from 200 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 12:
When dividing 290 by 57, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 17436.614035
Subtract 285 from 290 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 13:
57 can be fit into 50 0 times, resulting in a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 17436.614035
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 14:
57 goes into 500 8 times with a remainder of 44.
Record the quotient 8 as the next digit in the result. 
Result so far: 17436.61403508
Subtract 456 from 500 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

After the division, we end up with 17436.61403508 and a remainder of 4.4e-08.