838947 ÷ 51 
The aim is to understand the frequency of 51 in 838947.

Moving on to step 1:
When dividing 8 by 51, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 51

Advancing to step 2:
51 can be fit into 83 1 times, resulting in a remainder of 32.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 32 after subtracting 51 from 83.
Take the next digit (8) from the dividend and append it to 32, then repeat: 328 / 51

Let's proceed to step 3:
328 divided by 51 is 6 with a remainder of 22.
The next digit of our result is 6. 
Result so far: 16.0
If we take 306 away from 328, we end up with 22.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 51

Moving on to step 4:
When dividing 229 by 51, we get 4 with a remainder of 25.
Write down 4 as next digit of the result. 
Result so far: 164.0
If we subtract 204 from 229, we get 25.
Take the next digit (4) from the dividend and append it to 25, then repeat: 254 / 51

Advancing to step 5:
When dividing 254 by 51, we get 4 with a remainder of 50.
Record the quotient 4 as the next digit in the result. 
Result so far: 1644.0
Subtract 204 from 254 to get 50.
Bring next digit (7) of the dividend behind the 50 and repeat the process: 507 / 51

On to step 6:
51 can be fit into 507 9 times, resulting in a remainder of 48.
Write down 9 as next digit of the result. 
Result so far: 16449.0
Subtract 459 from 507 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 7:
When dividing 480 by 51, we get 9 with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 16449.9
If we take 459 away from 480, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 8:
The number 51 fits into 210 4 times, leaving a remainder of 6.
The next digit of our result is 4. 
Result so far: 16449.94
Subtract 204 from 210 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
If we divide 60 by 51, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 16449.941
If we take 51 away from 60, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 10:
90 divided by 51 is 1 with a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 16449.9411
Subtract 51 from 90 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.

Our division results in 16449.9411 with a remaining 0.00039.