64612087 divided by 397 
The aim is to understand the frequency of 397 in 64612087.

Advancing to step 1:
6 divided by 397 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 397

Moving on to step 2:
The number 397 fits into 64 0 times, leaving a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Fetch the next digit (6) from the dividend, attach it to 64 and continue: 646 / 397

Let's proceed to step 3:
646 divided by 397 is 1 with a remainder of 249.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 249 after subtracting 397 from 646.
Fetch the next digit (1) from the dividend, attach it to 249 and continue: 2491 / 397

Going ahead to step 4:
When dividing 2491 by 397, we get 6 with a remainder of 109.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we take 2382 away from 2491, we end up with 109.
Take the next digit (2) from the dividend and append it to 109, then repeat: 1092 / 397

Let's proceed to step 5:
The number 397 fits into 1092 2 times, leaving a remainder of 298.
Use 2 as the next digit of our solution. 
Result so far: 162.0
Subtract 794 from 1092 to get 298.
Append the next digit (0) from the dividend to 298 and continue with: 2980 / 397

Moving on to step 6:
2980 divided by 397 is 7 with a remainder of 201.
Put 7 as the next digit of the answer. 
Result so far: 1627.0
If we take 2779 away from 2980, we end up with 201.
Include the next digit (8) from the dividend after 201, then repeat: 2018 / 397

Advancing to step 7:
397 goes into 2018 5 times with a remainder of 33.
Write down 5 as next digit of the result. 
Result so far: 16275.0
The remainder is 33 after subtracting 1985 from 2018.
Bring next digit (7) of the dividend behind the 33 and repeat the process: 337 / 397

Step 8:
397 goes into 337 0 times with a remainder of 337.
The next digit of our result is 0. 
Result so far: 162750.0
Subtracting 0 from 337 leaves us with 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Advancing to step 9:
The number 397 fits into 3370 8 times, leaving a remainder of 194.
The next digit of our result is 8. 
Result so far: 162750.8
Deduct 3176 from 3370 and we're left with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Moving on to step 10:
If we divide 1940 by 397, we get 4 and a remainder of 352.
Record the quotient 4 as the next digit in the result. 
Result so far: 162750.84
If we take 1588 away from 1940, we end up with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Going ahead to step 11:
The number 397 fits into 3520 8 times, leaving a remainder of 344.
Use 8 as the next digit of our solution. 
Result so far: 162750.848
The remainder is 344 after subtracting 3176 from 3520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Let's proceed to step 12:
397 goes into 3440 8 times with a remainder of 264.
Put 8 as the next digit of the answer. 
Result so far: 162750.8488
Subtract 3176 from 3440 to get 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

The final outcome is 162750.8488, with a leftover of 0.00264.