57891815 ÷ 851 
The aim is to understand the frequency of 851 in 57891815.

Going ahead to step 1:
If we divide 5 by 851, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 851

Step 2:
When dividing 57 by 851, we get 0 with a remainder of 57.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Append the next digit (8) from the dividend to 57 and continue with: 578 / 851

Advancing to step 3:
851 goes into 578 0 times with a remainder of 578.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 578, we get 578.
Append the next digit (9) from the dividend to 578 and continue with: 5789 / 851

On to step 4:
When dividing 5789 by 851, we get 6 with a remainder of 683.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 5106 from 5789 leaves us with 683.
Grab the next digit (1) from the dividend, add it to 683, then carry on: 6831 / 851

Let's proceed to step 5:
When dividing 6831 by 851, we get 8 with a remainder of 23.
Write down 8 as next digit of the result. 
Result so far: 68.0
Subtract 6808 from 6831 to get 23.
Fetch the next digit (8) from the dividend, attach it to 23 and continue: 238 / 851

Let's proceed to step 6:
If we divide 238 by 851, we get 0 and a remainder of 238.
The next digit of our result is 0. 
Result so far: 680.0
Deduct 0 from 238 and we're left with 238.
Include the next digit (1) from the dividend after 238, then repeat: 2381 / 851

Advancing to step 7:
When dividing 2381 by 851, we get 2 with a remainder of 679.
Put 2 as the next digit of the answer. 
Result so far: 6802.0
Subtracting 1702 from 2381 leaves us with 679.
Take the next digit (5) from the dividend and append it to 679, then repeat: 6795 / 851

Going ahead to step 8:
851 can be fit into 6795 7 times, resulting in a remainder of 838.
Use 7 as the next digit of our solution. 
Result so far: 68027.0
Subtract 5957 from 6795 to get 838.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8380, and continue the process.

Advancing to step 9:
851 can be fit into 8380 9 times, resulting in a remainder of 721.
Write down 9 as next digit of the result. 
Result so far: 68027.9
Subtract 7659 from 8380 to get 721.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7210, and continue the process.

Step 10:
The number 851 fits into 7210 8 times, leaving a remainder of 402.
The number 8 becomes the next digit in our result. 
Result so far: 68027.98
If we subtract 6808 from 7210, we get 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Advancing to step 11:
When dividing 4020 by 851, we get 4 with a remainder of 616.
Put 4 as the next digit of the answer. 
Result so far: 68027.984
If we take 3404 away from 4020, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Let's proceed to step 12:
If we divide 6160 by 851, we get 7 and a remainder of 203.
Record the quotient 7 as the next digit in the result. 
Result so far: 68027.9847
If we subtract 5957 from 6160, we get 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Step 13:
When dividing 2030 by 851, we get 2 with a remainder of 328.
The next digit of our result is 2. 
Result so far: 68027.98472
Subtracting 1702 from 2030 leaves us with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Going ahead to step 14:
3280 divided by 851 is 3 with a remainder of 727.
Put 3 as the next digit of the answer. 
Result so far: 68027.984723
Deduct 2553 from 3280 and we're left with 727.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7270, and continue the process.

Advancing to step 15:
If we divide 7270 by 851, we get 8 and a remainder of 462.
The number 8 becomes the next digit in our result. 
Result so far: 68027.9847238
Subtracting 6808 from 7270 leaves us with 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Let's proceed to step 16:
4620 divided by 851 is 5 with a remainder of 365.
The number 5 becomes the next digit in our result. 
Result so far: 68027.98472385
If we take 4255 away from 4620, we end up with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

The quotient of the division is 68027.98472385, and the remainder is 3.65e-07.