We're dividing 42756903 by 857 
The aim is to understand the frequency of 857 in 42756903.

Step 1:
4 divided by 857 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 857

Step 2:
The number 857 fits into 42 0 times, leaving a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Grab the next digit (7) from the dividend, add it to 42, then carry on: 427 / 857

Let's proceed to step 3:
The number 857 fits into 427 0 times, leaving a remainder of 427.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 427 to get 427.
Take the next digit (5) from the dividend and append it to 427, then repeat: 4275 / 857

Going ahead to step 4:
857 can be fit into 4275 4 times, resulting in a remainder of 847.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 847 after subtracting 3428 from 4275.
Fetch the next digit (6) from the dividend, attach it to 847 and continue: 8476 / 857

Going ahead to step 5:
8476 divided by 857 is 9 with a remainder of 763.
Use 9 as the next digit of our solution. 
Result so far: 49.0
The remainder is 763 after subtracting 7713 from 8476.
Bring next digit (9) of the dividend behind the 763 and repeat the process: 7639 / 857

Step 6:
If we divide 7639 by 857, we get 8 and a remainder of 783.
Put 8 as the next digit of the answer. 
Result so far: 498.0
Deduct 6856 from 7639 and we're left with 783.
Bring next digit (0) of the dividend behind the 783 and repeat the process: 7830 / 857

Step 7:
When dividing 7830 by 857, we get 9 with a remainder of 117.
Use 9 as the next digit of our solution. 
Result so far: 4989.0
Deduct 7713 from 7830 and we're left with 117.
Fetch the next digit (3) from the dividend, attach it to 117 and continue: 1173 / 857

On to step 8:
If we divide 1173 by 857, we get 1 and a remainder of 316.
Put 1 as the next digit of the answer. 
Result so far: 49891.0
Subtract 857 from 1173 to get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Moving on to step 9:
857 can be fit into 3160 3 times, resulting in a remainder of 589.
Write down 3 as next digit of the result. 
Result so far: 49891.3
Subtract 2571 from 3160 to get 589.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5890, and continue the process.

Step 10:
When dividing 5890 by 857, we get 6 with a remainder of 748.
Use 6 as the next digit of our solution. 
Result so far: 49891.36
Deduct 5142 from 5890 and we're left with 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

On to step 11:
If we divide 7480 by 857, we get 8 and a remainder of 624.
Put 8 as the next digit of the answer. 
Result so far: 49891.368
If we take 6856 away from 7480, we end up with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

On to step 12:
857 can be fit into 6240 7 times, resulting in a remainder of 241.
Put 7 as the next digit of the answer. 
Result so far: 49891.3687
Subtract 5999 from 6240 to get 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Step 13:
When dividing 2410 by 857, we get 2 with a remainder of 696.
Put 2 as the next digit of the answer. 
Result so far: 49891.36872
The remainder is 696 after subtracting 1714 from 2410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Let's proceed to step 14:
When dividing 6960 by 857, we get 8 with a remainder of 104.
The number 8 becomes the next digit in our result. 
Result so far: 49891.368728
If we subtract 6856 from 6960, we get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

On to step 15:
857 can be fit into 1040 1 times, resulting in a remainder of 183.
Use 1 as the next digit of our solution. 
Result so far: 49891.3687281
The remainder is 183 after subtracting 857 from 1040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

Step 16:
857 goes into 1830 2 times with a remainder of 116.
The next digit of our result is 2. 
Result so far: 49891.36872812
Subtract 1714 from 1830 to get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

The final outcome is 49891.36872812, with a leftover of 1.16e-07.