We look at the division of 51880804 by 485 
The aim is to understand the frequency of 485 in 51880804.

Advancing to step 1:
If we divide 5 by 485, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 485

Moving on to step 2:
If we divide 51 by 485, we get 0 and a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Append the next digit (8) from the dividend to 51 and continue with: 518 / 485

On to step 3:
When dividing 518 by 485, we get 1 with a remainder of 33.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 485 away from 518, we end up with 33.
Take the next digit (8) from the dividend and append it to 33, then repeat: 338 / 485

Advancing to step 4:
338 divided by 485 is 0 with a remainder of 338.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 338 and we're left with 338.
Take the next digit (0) from the dividend and append it to 338, then repeat: 3380 / 485

Advancing to step 5:
When dividing 3380 by 485, we get 6 with a remainder of 470.
Put 6 as the next digit of the answer. 
Result so far: 106.0
If we take 2910 away from 3380, we end up with 470.
Append the next digit (8) from the dividend to 470 and continue with: 4708 / 485

Going ahead to step 6:
The number 485 fits into 4708 9 times, leaving a remainder of 343.
The next digit of our result is 9. 
Result so far: 1069.0
If we subtract 4365 from 4708, we get 343.
Grab the next digit (0) from the dividend, add it to 343, then carry on: 3430 / 485

Step 7:
When dividing 3430 by 485, we get 7 with a remainder of 35.
The number 7 becomes the next digit in our result. 
Result so far: 10697.0
If we subtract 3395 from 3430, we get 35.
Include the next digit (4) from the dividend after 35, then repeat: 354 / 485

Advancing to step 8:
485 goes into 354 0 times with a remainder of 354.
Record the quotient 0 as the next digit in the result. 
Result so far: 106970.0
If we subtract 0 from 354, we get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Advancing to step 9:
If we divide 3540 by 485, we get 7 and a remainder of 145.
The number 7 becomes the next digit in our result. 
Result so far: 106970.7
Deduct 3395 from 3540 and we're left with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 10:
The number 485 fits into 1450 2 times, leaving a remainder of 480.
The next digit of our result is 2. 
Result so far: 106970.72
The remainder is 480 after subtracting 970 from 1450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 11:
When dividing 4800 by 485, we get 9 with a remainder of 435.
Record the quotient 9 as the next digit in the result. 
Result so far: 106970.729
Deduct 4365 from 4800 and we're left with 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Going ahead to step 12:
The number 485 fits into 4350 8 times, leaving a remainder of 470.
Use 8 as the next digit of our solution. 
Result so far: 106970.7298
If we subtract 3880 from 4350, we get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Moving on to step 13:
4700 divided by 485 is 9 with a remainder of 335.
The next digit of our result is 9. 
Result so far: 106970.72989
The remainder is 335 after subtracting 4365 from 4700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Going ahead to step 14:
When dividing 3350 by 485, we get 6 with a remainder of 440.
Record the quotient 6 as the next digit in the result. 
Result so far: 106970.729896
Deduct 2910 from 3350 and we're left with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 15:
4400 divided by 485 is 9 with a remainder of 35.
Put 9 as the next digit of the answer. 
Result so far: 106970.7298969
Subtract 4365 from 4400 to 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.

Step 16:
485 can be fit into 350 0 times, resulting in a remainder of 350.
Write down 0 as next digit of the result. 
Result so far: 106970.7298969
Subtract 0 from 350 to get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

The final result is 106970.7298969 with a remainder of 3.5e-07.