404133 ÷ 51 
The aim is to understand the frequency of 51 in 404133.

Moving on to step 1:
51 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 51

Advancing to step 2:
If we divide 40 by 51, we get 0 and a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Take the next digit (4) from the dividend and append it to 40, then repeat: 404 / 51

Step 3:
51 can be fit into 404 7 times, resulting in a remainder of 47.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 357 from 404 and we're left with 47.
Take the next digit (1) from the dividend and append it to 47, then repeat: 471 / 51

Going ahead to step 4:
The number 51 fits into 471 9 times, leaving a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 79.0
Subtracting 459 from 471 leaves us with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 51

Advancing to step 5:
If we divide 123 by 51, we get 2 and a remainder of 21.
Put 2 as the next digit of the answer. 
Result so far: 792.0
If we subtract 102 from 123, we get 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 51

Advancing to step 6:
The number 51 fits into 213 4 times, leaving a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 7924.0
If we take 204 away from 213, 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.

Step 7:
The number 51 fits into 90 1 times, leaving a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 7924.1
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.

Moving on to step 8:
The number 51 fits into 390 7 times, leaving a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 7924.17
Deduct 357 from 390 and we're left 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.

Advancing to step 9:
When dividing 330 by 51, we get 6 with a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 7924.176
Subtracting 306 from 330 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
51 goes into 240 4 times with a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 7924.1764
Deduct 204 from 240 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 11:
51 goes into 360 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 7924.17647
Deduct 357 from 360 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 12:
When dividing 30 by 51, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 7924.17647
If we take 0 away from 30, we end up 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 13:
The number 51 fits into 300 5 times, leaving a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 7924.1764705
Deduct 255 from 300 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 14:
The number 51 fits into 450 8 times, leaving a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 7924.17647058
The remainder is 42 after subtracting 408 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final result is 7924.17647058 with a remainder of 4.2e-08.