83675979 divided by 641 
The aim is to understand the frequency of 641 in 83675979.

Step 1:
641 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 641

Let's proceed to step 2:
641 can be fit into 83 0 times, resulting in a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 83 after subtracting 0 from 83.
Bring next digit (6) of the dividend behind the 83 and repeat the process: 836 / 641

On to step 3:
641 goes into 836 1 times with a remainder of 195.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 641 from 836 and we're left with 195.
Bring next digit (7) of the dividend behind the 195 and repeat the process: 1957 / 641

Step 4:
The number 641 fits into 1957 3 times, leaving a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 1923 from 1957 and we're left with 34.
Fetch the next digit (5) from the dividend, attach it to 34 and continue: 345 / 641

Advancing to step 5:
If we divide 345 by 641, we get 0 and a remainder of 345.
Write down 0 as next digit of the result. 
Result so far: 130.0
If we take 0 away from 345, we end up with 345.
Append the next digit (9) from the dividend to 345 and continue with: 3459 / 641

Moving on to step 6:
641 can be fit into 3459 5 times, resulting in a remainder of 254.
Write down 5 as next digit of the result. 
Result so far: 1305.0
The remainder is 254 after subtracting 3205 from 3459.
Bring next digit (7) of the dividend behind the 254 and repeat the process: 2547 / 641

Going ahead to step 7:
The number 641 fits into 2547 3 times, leaving a remainder of 624.
Put 3 as the next digit of the answer. 
Result so far: 13053.0
Subtract 1923 from 2547 to get 624.
Fetch the next digit (9) from the dividend, attach it to 624 and continue: 6249 / 641

On to step 8:
641 can be fit into 6249 9 times, resulting in a remainder of 480.
Record the quotient 9 as the next digit in the result. 
Result so far: 130539.0
Deduct 5769 from 6249 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 9:
4800 divided by 641 is 7 with a remainder of 313.
The next digit of our result is 7. 
Result so far: 130539.7
Subtract 4487 from 4800 to get 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Going ahead to step 10:
When dividing 3130 by 641, we get 4 with a remainder of 566.
Put 4 as the next digit of the answer. 
Result so far: 130539.74
If we subtract 2564 from 3130, we get 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

Moving on to step 11:
When dividing 5660 by 641, we get 8 with a remainder of 532.
The next digit of our result is 8. 
Result so far: 130539.748
If we subtract 5128 from 5660, we get 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Step 12:
641 can be fit into 5320 8 times, resulting in a remainder of 192.
The number 8 becomes the next digit in our result. 
Result so far: 130539.7488
Subtracting 5128 from 5320 leaves us with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

After the division, we end up with 130539.7488 and a remainder of 0.00192.