We divide 51564974 by 851
The aim is to understand the frequency of 851 in 51564974.

Moving on to step 1:
When dividing 5 by 851, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 851

Going ahead to step 2:
The number 851 fits into 51 0 times, leaving a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Bring next digit (5) of the dividend behind the 51 and repeat the process: 515 / 851

Advancing to step 3:
If we divide 515 by 851, we get 0 and a remainder of 515.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 515 to get 515.
Fetch the next digit (6) from the dividend, attach it to 515 and continue: 5156 / 851

Going ahead to step 4:
5156 divided by 851 is 6 with a remainder of 50.
The next digit of our result is 6. 
Result so far: 6.0
If we take 5106 away from 5156, we end up with 50.
Fetch the next digit (4) from the dividend, attach it to 50 and continue: 504 / 851

Advancing to step 5:
The number 851 fits into 504 0 times, leaving a remainder of 504.
Record the quotient 0 as the next digit in the result. 
Result so far: 60.0
If we subtract 0 from 504, we get 504.
Include the next digit (9) from the dividend after 504, then repeat: 5049 / 851

Moving on to step 6:
When dividing 5049 by 851, we get 5 with a remainder of 794.
The number 5 becomes the next digit in our result. 
Result so far: 605.0
If we subtract 4255 from 5049, we get 794.
Append the next digit (7) from the dividend to 794 and continue with: 7947 / 851

Advancing to step 7:
851 can be fit into 7947 9 times, resulting in a remainder of 288.
The next digit of our result is 9. 
Result so far: 6059.0
If we take 7659 away from 7947, we end up with 288.
Append the next digit (4) from the dividend to 288 and continue with: 2884 / 851

Step 8:
851 goes into 2884 3 times with a remainder of 331.
Record the quotient 3 as the next digit in the result. 
Result so far: 60593.0
Subtracting 2553 from 2884 leaves us with 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

Step 9:
The number 851 fits into 3310 3 times, leaving a remainder of 757.
Write down 3 as next digit of the result. 
Result so far: 60593.3
The remainder is 757 after subtracting 2553 from 3310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7570, and continue the process.

On to step 10:
If we divide 7570 by 851, we get 8 and a remainder of 762.
The number 8 becomes the next digit in our result. 
Result so far: 60593.38
If we take 6808 away from 7570, we end up with 762.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7620, and continue the process.

Step 11:
When dividing 7620 by 851, we get 8 with a remainder of 812.
The next digit of our result is 8. 
Result so far: 60593.388
Subtracting 6808 from 7620 leaves us with 812.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8120, and continue the process.

After the division, we end up with 60593.388 and a remainder of 0.0812.