We're dividing 85190001 by 397 
The aim is to understand the frequency of 397 in 85190001.

Going ahead to step 1:
When dividing 8 by 397, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 397

Step 2:
85 divided by 397 is 0 with a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 85 after subtracting 0 from 85.
Fetch the next digit (1) from the dividend, attach it to 85 and continue: 851 / 397

Moving on to step 3:
The number 397 fits into 851 2 times, leaving a remainder of 57.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 794 away from 851, we end up with 57.
Include the next digit (9) from the dividend after 57, then repeat: 579 / 397

Let's proceed to step 4:
397 goes into 579 1 times with a remainder of 182.
Use 1 as the next digit of our solution. 
Result so far: 21.0
The remainder is 182 after subtracting 397 from 579.
Take the next digit (0) from the dividend and append it to 182, then repeat: 1820 / 397

On to step 5:
1820 divided by 397 is 4 with a remainder of 232.
The number 4 becomes the next digit in our result. 
Result so far: 214.0
Subtract 1588 from 1820 to get 232.
Take the next digit (0) from the dividend and append it to 232, then repeat: 2320 / 397

Going ahead to step 6:
If we divide 2320 by 397, we get 5 and a remainder of 335.
Record the quotient 5 as the next digit in the result. 
Result so far: 2145.0
Deduct 1985 from 2320 and we're left with 335.
Bring next digit (0) of the dividend behind the 335 and repeat the process: 3350 / 397

Advancing to step 7:
397 goes into 3350 8 times with a remainder of 174.
Use 8 as the next digit of our solution. 
Result so far: 21458.0
If we subtract 3176 from 3350, we get 174.
Include the next digit (1) from the dividend after 174, then repeat: 1741 / 397

Advancing to step 8:
1741 divided by 397 is 4 with a remainder of 153.
Put 4 as the next digit of the answer. 
Result so far: 214584.0
Subtracting 1588 from 1741 leaves us with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Moving on to step 9:
If we divide 1530 by 397, we get 3 and a remainder of 339.
Record the quotient 3 as the next digit in the result. 
Result so far: 214584.3
Subtract 1191 from 1530 to get 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Going ahead to step 10:
If we divide 3390 by 397, we get 8 and a remainder of 214.
The next digit of our result is 8. 
Result so far: 214584.38
Deduct 3176 from 3390 and we're left with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Going ahead to step 11:
If we divide 2140 by 397, we get 5 and a remainder of 155.
Put 5 as the next digit of the answer. 
Result so far: 214584.385
The remainder is 155 after subtracting 1985 from 2140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

On to step 12:
If we divide 1550 by 397, we get 3 and a remainder of 359.
Use 3 as the next digit of our solution. 
Result so far: 214584.3853
If we take 1191 away from 1550, we end up with 359.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3590, and continue the process.

Let's proceed to step 13:
The number 397 fits into 3590 9 times, leaving a remainder of 17.
The next digit of our result is 9. 
Result so far: 214584.38539
The remainder is 17 after subtracting 3573 from 3590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 14:
When dividing 170 by 397, we get 0 with a remainder of 170.
Use 0 as the next digit of our solution. 
Result so far: 214584.38539
Subtracting 0 from 170 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Going ahead to step 15:
When dividing 1700 by 397, we get 4 with a remainder of 112.
Write down 4 as next digit of the result. 
Result so far: 214584.3853904
Subtract 1588 from 1700 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Moving on to step 16:
1120 divided by 397 is 2 with a remainder of 326.
The number 2 becomes the next digit in our result. 
Result so far: 214584.38539042
If we take 794 away from 1120, we end up with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

The final result is 214584.38539042 with a remainder of 3.26e-07.