841974 ÷ 51 
The aim is to understand the frequency of 51 in 841974.

Step 1:
The number 51 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 51

Advancing to step 2:
84 divided by 51 is 1 with a remainder of 33.
The next digit of our result is 1. 
Result so far: 1.0
If we take 51 away from 84, we end up with 33.
Grab the next digit (1) from the dividend, add it to 33, then carry on: 331 / 51

Let's proceed to step 3:
The number 51 fits into 331 6 times, leaving a remainder of 25.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we subtract 306 from 331, we get 25.
Fetch the next digit (9) from the dividend, attach it to 25 and continue: 259 / 51

On to step 4:
When dividing 259 by 51, we get 5 with a remainder of 4.
Write down 5 as next digit of the result. 
Result so far: 165.0
If we subtract 255 from 259, we get 4.
Take the next digit (7) from the dividend and append it to 4, then repeat: 47 / 51

Step 5:
If we divide 47 by 51, we get 0 and a remainder of 47.
The next digit of our result is 0. 
Result so far: 1650.0
Deduct 0 from 47 and we're left with 47.
Append the next digit (4) from the dividend to 47 and continue with: 474 / 51

Let's proceed to step 6:
The number 51 fits into 474 9 times, leaving a remainder of 15.
Put 9 as the next digit of the answer. 
Result so far: 16509.0
If we take 459 away from 474, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
51 can be fit into 150 2 times, resulting in a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 16509.2
Deduct 102 from 150 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 8:
If we divide 480 by 51, we get 9 and a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 16509.29
Subtract 459 from 480 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 9:
51 goes into 210 4 times with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 16509.294
The remainder is 6 after subtracting 204 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 10:
When dividing 60 by 51, we get 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 16509.2941
If we subtract 51 from 60, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 11:
51 goes into 90 1 times with a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 16509.29411
If we subtract 51 from 90, we 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 16509.29411 with a remaining 3.9e-05.