78846109 divided by 397 
The aim is to understand the frequency of 397 in 78846109.

Step 1:
397 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 397

Moving on to step 2:
397 goes into 78 0 times with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Bring next digit (8) of the dividend behind the 78 and repeat the process: 788 / 397

Step 3:
If we divide 788 by 397, we get 1 and a remainder of 391.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 397 from 788, we get 391.
Include the next digit (4) from the dividend after 391, then repeat: 3914 / 397

Going ahead to step 4:
397 can be fit into 3914 9 times, resulting in a remainder of 341.
Write down 9 as next digit of the result. 
Result so far: 19.0
The remainder is 341 after subtracting 3573 from 3914.
Grab the next digit (6) from the dividend, add it to 341, then carry on: 3416 / 397

Advancing to step 5:
397 goes into 3416 8 times with a remainder of 240.
Record the quotient 8 as the next digit in the result. 
Result so far: 198.0
If we take 3176 away from 3416, we end up with 240.
Grab the next digit (1) from the dividend, add it to 240, then carry on: 2401 / 397

Moving on to step 6:
2401 divided by 397 is 6 with a remainder of 19.
Write down 6 as next digit of the result. 
Result so far: 1986.0
Subtract 2382 from 2401 to get 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 397

Step 7:
397 can be fit into 190 0 times, resulting in a remainder of 190.
The number 0 becomes the next digit in our result. 
Result so far: 19860.0
Deduct 0 from 190 and we're left with 190.
Take the next digit (9) from the dividend and append it to 190, then repeat: 1909 / 397

Moving on to step 8:
1909 divided by 397 is 4 with a remainder of 321.
The number 4 becomes the next digit in our result. 
Result so far: 198604.0
Subtract 1588 from 1909 to get 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Going ahead to step 9:
3210 divided by 397 is 8 with a remainder of 34.
The next digit of our result is 8. 
Result so far: 198604.8
Deduct 3176 from 3210 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 10:
397 can be fit into 340 0 times, resulting in a remainder of 340.
Record the quotient 0 as the next digit in the result. 
Result so far: 198604.8
The remainder is 340 after subtracting 0 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Going ahead to step 11:
397 goes into 3400 8 times with a remainder of 224.
Record the quotient 8 as the next digit in the result. 
Result so far: 198604.808
Deduct 3176 from 3400 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 12:
If we divide 2240 by 397, we get 5 and a remainder of 255.
Put 5 as the next digit of the answer. 
Result so far: 198604.8085
If we take 1985 away from 2240, we end up with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Step 13:
The number 397 fits into 2550 6 times, leaving a remainder of 168.
The number 6 becomes the next digit in our result. 
Result so far: 198604.80856
The remainder is 168 after subtracting 2382 from 2550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Step 14:
397 can be fit into 1680 4 times, resulting in a remainder of 92.
Write down 4 as next digit of the result. 
Result so far: 198604.808564
Subtract 1588 from 1680 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Moving on to step 15:
397 can be fit into 920 2 times, resulting in a remainder of 126.
Record the quotient 2 as the next digit in the result. 
Result so far: 198604.8085642
Deduct 794 from 920 and we're left with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Advancing to step 16:
The number 397 fits into 1260 3 times, leaving a remainder of 69.
The number 3 becomes the next digit in our result. 
Result so far: 198604.80856423
If we subtract 1191 from 1260, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

The quotient of the division is 198604.80856423, and the remainder is 6.9e-08.