83211975 divided by 419 
The aim is to understand the frequency of 419 in 83211975.

On to step 1:
When dividing 8 by 419, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 419

Let's proceed to step 2:
419 can be fit into 83 0 times, resulting in a remainder of 83.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 83, we get 83.
Bring next digit (2) of the dividend behind the 83 and repeat the process: 832 / 419

Advancing to step 3:
832 divided by 419 is 1 with a remainder of 413.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 419 from 832 and we're left with 413.
Bring next digit (1) of the dividend behind the 413 and repeat the process: 4131 / 419

Advancing to step 4:
4131 divided by 419 is 9 with a remainder of 360.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtract 3771 from 4131 to get 360.
Grab the next digit (1) from the dividend, add it to 360, then carry on: 3601 / 419

Step 5:
3601 divided by 419 is 8 with a remainder of 249.
The number 8 becomes the next digit in our result. 
Result so far: 198.0
Subtract 3352 from 3601 to get 249.
Take the next digit (9) from the dividend and append it to 249, then repeat: 2499 / 419

On to step 6:
When dividing 2499 by 419, we get 5 with a remainder of 404.
Use 5 as the next digit of our solution. 
Result so far: 1985.0
Deduct 2095 from 2499 and we're left with 404.
Fetch the next digit (7) from the dividend, attach it to 404 and continue: 4047 / 419

Advancing to step 7:
419 can be fit into 4047 9 times, resulting in a remainder of 276.
The number 9 becomes the next digit in our result. 
Result so far: 19859.0
Deduct 3771 from 4047 and we're left with 276.
Bring next digit (5) of the dividend behind the 276 and repeat the process: 2765 / 419

Moving on to step 8:
2765 divided by 419 is 6 with a remainder of 251.
Put 6 as the next digit of the answer. 
Result so far: 198596.0
Subtracting 2514 from 2765 leaves us with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

On to step 9:
If we divide 2510 by 419, we get 5 and a remainder of 415.
Write down 5 as next digit of the result. 
Result so far: 198596.5
If we take 2095 away from 2510, we end up with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Going ahead to step 10:
If we divide 4150 by 419, we get 9 and a remainder of 379.
The number 9 becomes the next digit in our result. 
Result so far: 198596.59
Deduct 3771 from 4150 and we're left with 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

Going ahead to step 11:
When dividing 3790 by 419, we get 9 with a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 198596.599
Subtract 3771 from 3790 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The quotient of the division is 198596.599, and the remainder is 0.0019.