We look at the division of 45246217 by 641 
The aim is to understand the frequency of 641 in 45246217.

Step 1:
The number 641 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 641

On to step 2:
641 can be fit into 45 0 times, resulting in a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 45, we get 45.
Append the next digit (2) from the dividend to 45 and continue with: 452 / 641

On to step 3:
641 can be fit into 452 0 times, resulting in a remainder of 452.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 452, we end up with 452.
Take the next digit (4) from the dividend and append it to 452, then repeat: 4524 / 641

On to step 4:
641 goes into 4524 7 times with a remainder of 37.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 37 after subtracting 4487 from 4524.
Append the next digit (6) from the dividend to 37 and continue with: 376 / 641

Going ahead to step 5:
When dividing 376 by 641, we get 0 with a remainder of 376.
The number 0 becomes the next digit in our result. 
Result so far: 70.0
If we take 0 away from 376, we end up with 376.
Take the next digit (2) from the dividend and append it to 376, then repeat: 3762 / 641

On to step 6:
641 goes into 3762 5 times with a remainder of 557.
Put 5 as the next digit of the answer. 
Result so far: 705.0
Subtracting 3205 from 3762 leaves us with 557.
Take the next digit (1) from the dividend and append it to 557, then repeat: 5571 / 641

Let's proceed to step 7:
The number 641 fits into 5571 8 times, leaving a remainder of 443.
Record the quotient 8 as the next digit in the result. 
Result so far: 7058.0
If we subtract 5128 from 5571, we get 443.
Take the next digit (7) from the dividend and append it to 443, then repeat: 4437 / 641

Step 8:
When dividing 4437 by 641, we get 6 with a remainder of 591.
Record the quotient 6 as the next digit in the result. 
Result so far: 70586.0
If we take 3846 away from 4437, we end up with 591.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

On to step 9:
If we divide 5910 by 641, we get 9 and a remainder of 141.
The number 9 becomes the next digit in our result. 
Result so far: 70586.9
Subtracting 5769 from 5910 leaves us with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Step 10:
If we divide 1410 by 641, we get 2 and a remainder of 128.
The next digit of our result is 2. 
Result so far: 70586.92
The remainder is 128 after subtracting 1282 from 1410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Going ahead to step 11:
641 goes into 1280 1 times with a remainder of 639.
Record the quotient 1 as the next digit in the result. 
Result so far: 70586.921
Deduct 641 from 1280 and we're left with 639.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6390, and continue the process.

Let's proceed to step 12:
The number 641 fits into 6390 9 times, leaving a remainder of 621.
The next digit of our result is 9. 
Result so far: 70586.9219
If we take 5769 away from 6390, we end up with 621.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6210, and continue the process.

Going ahead to step 13:
6210 divided by 641 is 9 with a remainder of 441.
The number 9 becomes the next digit in our result. 
Result so far: 70586.92199
The remainder is 441 after subtracting 5769 from 6210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4410, and continue the process.

The quotient of the division is 70586.92199, and the remainder is 0.000441.