We look at the division of 12503755 by 857 
The aim is to understand the frequency of 857 in 12503755.

Step 1:
If we divide 1 by 857, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 857

Moving on to step 2:
857 can be fit into 12 0 times, resulting in a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Fetch the next digit (5) from the dividend, attach it to 12 and continue: 125 / 857

On to step 3:
857 goes into 125 0 times with a remainder of 125.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 125 to get 125.
Include the next digit (0) from the dividend after 125, then repeat: 1250 / 857

On to step 4:
857 can be fit into 1250 1 times, resulting in a remainder of 393.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 857 from 1250, we get 393.
Take the next digit (3) from the dividend and append it to 393, then repeat: 3933 / 857

Moving on to step 5:
3933 divided by 857 is 4 with a remainder of 505.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 3428 from 3933 to get 505.
Grab the next digit (7) from the dividend, add it to 505, then carry on: 5057 / 857

On to step 6:
857 goes into 5057 5 times with a remainder of 772.
Put 5 as the next digit of the answer. 
Result so far: 145.0
If we take 4285 away from 5057, we end up with 772.
Include the next digit (5) from the dividend after 772, then repeat: 7725 / 857

Advancing to step 7:
857 goes into 7725 9 times with a remainder of 12.
The next digit of our result is 9. 
Result so far: 1459.0
Subtracting 7713 from 7725 leaves us with 12.
Fetch the next digit (5) from the dividend, attach it to 12 and continue: 125 / 857

Let's proceed to step 8:
If we divide 125 by 857, we get 0 and a remainder of 125.
Use 0 as the next digit of our solution. 
Result so far: 14590.0
If we subtract 0 from 125, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 9:
857 goes into 1250 1 times with a remainder of 393.
The number 1 becomes the next digit in our result. 
Result so far: 14590.1
Subtract 857 from 1250 to get 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3930, and continue the process.

Moving on to step 10:
The number 857 fits into 3930 4 times, leaving a remainder of 502.
Record the quotient 4 as the next digit in the result. 
Result so far: 14590.14
Deduct 3428 from 3930 and we're left with 502.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5020, and continue the process.

On to step 11:
The number 857 fits into 5020 5 times, leaving a remainder of 735.
Put 5 as the next digit of the answer. 
Result so far: 14590.145
Subtracting 4285 from 5020 leaves us with 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

Step 12:
When dividing 7350 by 857, we get 8 with a remainder of 494.
Record the quotient 8 as the next digit in the result. 
Result so far: 14590.1458
Subtract 6856 from 7350 to get 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Moving on to step 13:
If we divide 4940 by 857, we get 5 and a remainder of 655.
Use 5 as the next digit of our solution. 
Result so far: 14590.14585
Subtract 4285 from 4940 to get 655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Advancing to step 14:
When dividing 6550 by 857, we get 7 with a remainder of 551.
Write down 7 as next digit of the result. 
Result so far: 14590.145857
If we subtract 5999 from 6550, we get 551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

Advancing to step 15:
When dividing 5510 by 857, we get 6 with a remainder of 368.
The next digit of our result is 6. 
Result so far: 14590.1458576
The remainder is 368 after subtracting 5142 from 5510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

On to step 16:
When dividing 3680 by 857, we get 4 with a remainder of 252.
The next digit of our result is 4. 
Result so far: 14590.14585764
The remainder is 252 after subtracting 3428 from 3680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

In conclusion, the division gives 14590.14585764 with a balance of 2.52e-07.