798863 ÷ 51 
The aim is to understand the frequency of 51 in 798863.

Going ahead to step 1:
7 divided by 51 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 51

Advancing to step 2:
51 can be fit into 79 1 times, resulting in a remainder of 28.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 51 from 79, we get 28.
Fetch the next digit (8) from the dividend, attach it to 28 and continue: 288 / 51

Moving on to step 3:
288 divided by 51 is 5 with a remainder of 33.
The next digit of our result is 5. 
Result so far: 15.0
The remainder is 33 after subtracting 255 from 288.
Grab the next digit (8) from the dividend, add it to 33, then carry on: 338 / 51

Advancing to step 4:
51 goes into 338 6 times with a remainder of 32.
Use 6 as the next digit of our solution. 
Result so far: 156.0
Deduct 306 from 338 and we're left with 32.
Include the next digit (6) from the dividend after 32, then repeat: 326 / 51

On to step 5:
51 goes into 326 6 times with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 1566.0
Deduct 306 from 326 and we're left with 20.
Fetch the next digit (3) from the dividend, attach it to 20 and continue: 203 / 51

On to step 6:
51 goes into 203 3 times with a remainder of 50.
Put 3 as the next digit of the answer. 
Result so far: 15663.0
If we subtract 153 from 203, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 7:
51 can be fit into 500 9 times, resulting in a remainder of 41.
The next digit of our result is 9. 
Result so far: 15663.9
Deduct 459 from 500 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 8:
51 can be fit into 410 8 times, resulting in a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 15663.98
Subtract 408 from 410 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 9:
When dividing 20 by 51, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 15663.98
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
51 goes into 200 3 times with a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 15663.9803
Subtracting 153 from 200 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 11:
When dividing 470 by 51, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 15663.98039
If we take 459 away from 470, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 12:
The number 51 fits into 110 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 15663.980392
The remainder is 8 after subtracting 102 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 13:
The number 51 fits into 80 1 times, leaving a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 15663.9803921
Subtracting 51 from 80 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 14:
The number 51 fits into 290 5 times, leaving a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 15663.98039215
Deduct 255 from 290 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The quotient of the division is 15663.98039215, and the remainder is 3.5e-08.