807664 divided by 51 
The aim is to understand the frequency of 51 in 807664.

Let's proceed to step 1:
The number 51 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 51

Moving on to step 2:
80 divided by 51 is 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 51 from 80 to get 29.
Append the next digit (7) from the dividend to 29 and continue with: 297 / 51

Advancing to step 3:
The number 51 fits into 297 5 times, leaving a remainder of 42.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 255 from 297 to get 42.
Bring next digit (6) of the dividend behind the 42 and repeat the process: 426 / 51

Going ahead to step 4:
426 divided by 51 is 8 with a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 158.0
Subtracting 408 from 426 leaves us with 18.
Bring next digit (6) of the dividend behind the 18 and repeat the process: 186 / 51

Let's proceed to step 5:
186 divided by 51 is 3 with a remainder of 33.
The next digit of our result is 3. 
Result so far: 1583.0
If we subtract 153 from 186, we get 33.
Bring next digit (4) of the dividend behind the 33 and repeat the process: 334 / 51

Moving on to step 6:
When dividing 334 by 51, we get 6 with a remainder of 28.
Write down 6 as next digit of the result. 
Result so far: 15836.0
Deduct 306 from 334 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 7:
280 divided by 51 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 15836.5
Deduct 255 from 280 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 8:
If we divide 250 by 51, we get 4 and a remainder of 46.
The next digit of our result is 4. 
Result so far: 15836.54
If we subtract 204 from 250, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 9:
460 divided by 51 is 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 15836.549
Deduct 459 from 460 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 10:
If we divide 10 by 51, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 15836.549
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 11:
51 goes into 100 1 times with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 15836.54901
Deduct 51 from 100 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 12:
The number 51 fits into 490 9 times, leaving a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 15836.549019
Subtracting 459 from 490 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 13:
The number 51 fits into 310 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 15836.5490196
Subtracting 306 from 310 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 14:
51 goes into 40 0 times with a remainder of 40.
The next digit of our result is 0. 
Result so far: 15836.5490196
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 15836.5490196, and the remainder is 4e-08.