We divide 563691 by 51
The aim is to understand the frequency of 51 in 563691.

Step 1:
If we divide 5 by 51, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 51

Step 2:
When dividing 56 by 51, we get 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 5 after subtracting 51 from 56.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 51

Going ahead to step 3:
When dividing 53 by 51, we get 1 with a remainder of 2.
The next digit of our result is 1. 
Result so far: 11.0
Subtract 51 from 53 to get 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 51

Let's proceed to step 4:
When dividing 26 by 51, we get 0 with a remainder of 26.
Write down 0 as next digit of the result. 
Result so far: 110.0
The remainder is 26 after subtracting 0 from 26.
Grab the next digit (9) from the dividend, add it to 26, then carry on: 269 / 51

Moving on to step 5:
The number 51 fits into 269 5 times, leaving a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 1105.0
If we subtract 255 from 269, we get 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 51

Step 6:
If we divide 141 by 51, we get 2 and a remainder of 39.
The number 2 becomes the next digit in our result. 
Result so far: 11052.0
Subtract 102 from 141 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 7:
51 can be fit into 390 7 times, resulting in a remainder of 33.
Use 7 as the next digit of our solution. 
Result so far: 11052.7
Subtracting 357 from 390 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 8:
If we divide 330 by 51, we get 6 and a remainder of 24.
The next digit of our result is 6. 
Result so far: 11052.76
Subtract 306 from 330 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
51 goes into 240 4 times with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 11052.764
If we subtract 204 from 240, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
When dividing 360 by 51, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 11052.7647
If we subtract 357 from 360, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 11:
If we divide 30 by 51, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 11052.7647
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 12:
51 goes into 300 5 times with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 11052.764705
The remainder is 45 after subtracting 255 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 13:
If we divide 450 by 51, we get 8 and a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 11052.7647058
If we subtract 408 from 450, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 14:
51 goes into 420 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 11052.76470588
The remainder is 12 after subtracting 408 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 11052.76470588 with a remainder of 1.2e-08.