We divide 17781877 by 851
The aim is to understand the frequency of 851 in 17781877.

Advancing to step 1:
The number 851 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 851

Moving on to step 2:
If we divide 17 by 851, we get 0 and a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Include the next digit (7) from the dividend after 17, then repeat: 177 / 851

Step 3:
177 divided by 851 is 0 with a remainder of 177.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 177, we get 177.
Append the next digit (8) from the dividend to 177 and continue with: 1778 / 851

Going ahead to step 4:
When dividing 1778 by 851, we get 2 with a remainder of 76.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 1702 away from 1778, we end up with 76.
Bring next digit (1) of the dividend behind the 76 and repeat the process: 761 / 851

Advancing to step 5:
The number 851 fits into 761 0 times, leaving a remainder of 761.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we take 0 away from 761, we end up with 761.
Bring next digit (8) of the dividend behind the 761 and repeat the process: 7618 / 851

Going ahead to step 6:
851 goes into 7618 8 times with a remainder of 810.
Put 8 as the next digit of the answer. 
Result so far: 208.0
Subtracting 6808 from 7618 leaves us with 810.
Grab the next digit (7) from the dividend, add it to 810, then carry on: 8107 / 851

Step 7:
The number 851 fits into 8107 9 times, leaving a remainder of 448.
The number 9 becomes the next digit in our result. 
Result so far: 2089.0
If we take 7659 away from 8107, we end up with 448.
Grab the next digit (7) from the dividend, add it to 448, then carry on: 4487 / 851

Moving on to step 8:
When dividing 4487 by 851, we get 5 with a remainder of 232.
Use 5 as the next digit of our solution. 
Result so far: 20895.0
The remainder is 232 after subtracting 4255 from 4487.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Going ahead to step 9:
851 goes into 2320 2 times with a remainder of 618.
Write down 2 as next digit of the result. 
Result so far: 20895.2
Subtracting 1702 from 2320 leaves us with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

On to step 10:
If we divide 6180 by 851, we get 7 and a remainder of 223.
Record the quotient 7 as the next digit in the result. 
Result so far: 20895.27
If we subtract 5957 from 6180, we get 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Advancing to step 11:
If we divide 2230 by 851, we get 2 and a remainder of 528.
The next digit of our result is 2. 
Result so far: 20895.272
The remainder is 528 after subtracting 1702 from 2230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Step 12:
851 can be fit into 5280 6 times, resulting in a remainder of 174.
The number 6 becomes the next digit in our result. 
Result so far: 20895.2726
Deduct 5106 from 5280 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Let's proceed to step 13:
If we divide 1740 by 851, we get 2 and a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 20895.27262
Subtract 1702 from 1740 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 14:
851 goes into 380 0 times with a remainder of 380.
Use 0 as the next digit of our solution. 
Result so far: 20895.27262
Subtract 0 from 380 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Moving on to step 15:
The number 851 fits into 3800 4 times, leaving a remainder of 396.
Record the quotient 4 as the next digit in the result. 
Result so far: 20895.2726204
Deduct 3404 from 3800 and we're left with 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Going ahead to step 16:
3960 divided by 851 is 4 with a remainder of 556.
Put 4 as the next digit of the answer. 
Result so far: 20895.27262044
Subtracting 3404 from 3960 leaves us with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

The quotient of the division is 20895.27262044, and the remainder is 5.56e-07.