We look at the division of 919490 by 51 
The aim is to understand the frequency of 51 in 919490.

Step 1:
If we divide 9 by 51, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 51

Advancing to step 2:
91 divided by 51 is 1 with a remainder of 40.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 51 from 91 to get 40.
Grab the next digit (9) from the dividend, add it to 40, then carry on: 409 / 51

Moving on to step 3:
When dividing 409 by 51, we get 8 with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
Subtracting 408 from 409 leaves us with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 51

On to step 4:
If we divide 14 by 51, we get 0 and a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 180.0
Deduct 0 from 14 and we're left with 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 51

Let's proceed to step 5:
The number 51 fits into 149 2 times, leaving a remainder of 47.
The number 2 becomes the next digit in our result. 
Result so far: 1802.0
Subtract 102 from 149 to get 47.
Fetch the next digit (0) from the dividend, attach it to 47 and continue: 470 / 51

Going ahead to step 6:
470 divided by 51 is 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 18029.0
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.

Going ahead to step 7:
51 goes into 110 2 times with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 18029.2
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.

Moving on to step 8:
If we divide 80 by 51, we get 1 and a remainder of 29.
The next digit of our result is 1. 
Result so far: 18029.21
Deduct 51 from 80 and we're left 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.

Moving on to step 9:
When dividing 290 by 51, we get 5 with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 18029.215
If we subtract 255 from 290, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 10:
If we divide 350 by 51, we get 6 and a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 18029.2156
Subtracting 306 from 350 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 11:
If we divide 440 by 51, we get 8 and a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 18029.21568
The remainder is 32 after subtracting 408 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 12:
51 goes into 320 6 times with a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 18029.215686
Subtract 306 from 320 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 13:
If we divide 140 by 51, we get 2 and a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 18029.2156862
Subtracting 102 from 140 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 14:
When dividing 380 by 51, we get 7 with a remainder of 23.
The next digit of our result is 7. 
Result so far: 18029.21568627
The remainder is 23 after subtracting 357 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Our division results in 18029.21568627 with a remaining 2.3e-08.