We're dividing 597780 by 51 
The aim is to understand the frequency of 51 in 597780.

Step 1:
51 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 51

Let's proceed to step 2:
51 goes into 59 1 times with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 8 after subtracting 51 from 59.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 51

Moving on to step 3:
If we divide 87 by 51, we get 1 and a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 51 from 87 to get 36.
Take the next digit (7) from the dividend and append it to 36, then repeat: 367 / 51

Going ahead to step 4:
If we divide 367 by 51, we get 7 and a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 117.0
Subtract 357 from 367 to get 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 51

Step 5:
The number 51 fits into 108 2 times, leaving a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 1172.0
Deduct 102 from 108 and we're left with 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 51

Moving on to step 6:
When dividing 60 by 51, we get 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 11721.0
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.

Advancing to step 7:
51 can be fit into 90 1 times, resulting in a remainder of 39.
The next digit of our result is 1. 
Result so far: 11721.1
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.

Let's proceed to step 8:
When dividing 390 by 51, we get 7 with a remainder of 33.
Use 7 as the next digit of our solution. 
Result so far: 11721.17
The remainder is 33 after subtracting 357 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 9:
330 divided by 51 is 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 11721.176
Subtract 306 from 330 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 10:
240 divided by 51 is 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 11721.1764
If we take 204 away from 240, we end up 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.

Step 11:
51 can be fit into 360 7 times, resulting in a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 11721.17647
If we take 357 away from 360, we end up 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:
If we divide 30 by 51, we get 0 and a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 11721.17647
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 13:
If we divide 300 by 51, we get 5 and a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 11721.1764705
Subtracting 255 from 300 leaves us 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.

Let's proceed to step 14:
If we divide 450 by 51, we get 8 and a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 11721.17647058
If we subtract 408 from 450, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Our division results in 11721.17647058 with a remaining 4.2e-08.