Let's divide 87552654 by 641
The aim is to understand the frequency of 641 in 87552654.

On to step 1:
641 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 641

Moving on to step 2:
If we divide 87 by 641, we get 0 and a remainder of 87.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Grab the next digit (5) from the dividend, add it to 87, then carry on: 875 / 641

Step 3:
641 can be fit into 875 1 times, resulting in a remainder of 234.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 641 from 875 leaves us with 234.
Append the next digit (5) from the dividend to 234 and continue with: 2345 / 641

Moving on to step 4:
When dividing 2345 by 641, we get 3 with a remainder of 422.
Put 3 as the next digit of the answer. 
Result so far: 13.0
The remainder is 422 after subtracting 1923 from 2345.
Grab the next digit (2) from the dividend, add it to 422, then carry on: 4222 / 641

On to step 5:
4222 divided by 641 is 6 with a remainder of 376.
Record the quotient 6 as the next digit in the result. 
Result so far: 136.0
Subtracting 3846 from 4222 leaves us with 376.
Bring next digit (6) of the dividend behind the 376 and repeat the process: 3766 / 641

Step 6:
The number 641 fits into 3766 5 times, leaving a remainder of 561.
Put 5 as the next digit of the answer. 
Result so far: 1365.0
The remainder is 561 after subtracting 3205 from 3766.
Append the next digit (5) from the dividend to 561 and continue with: 5615 / 641

Going ahead to step 7:
5615 divided by 641 is 8 with a remainder of 487.
The number 8 becomes the next digit in our result. 
Result so far: 13658.0
Subtract 5128 from 5615 to get 487.
Take the next digit (4) from the dividend and append it to 487, then repeat: 4874 / 641

Going ahead to step 8:
The number 641 fits into 4874 7 times, leaving a remainder of 387.
Use 7 as the next digit of our solution. 
Result so far: 136587.0
Subtracting 4487 from 4874 leaves us with 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Going ahead to step 9:
When dividing 3870 by 641, we get 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 136587.6
Subtract 3846 from 3870 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 10:
When dividing 240 by 641, we get 0 with a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 136587.6
Subtract 0 from 240 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 11:
When dividing 2400 by 641, we get 3 with a remainder of 477.
The next digit of our result is 3. 
Result so far: 136587.603
If we subtract 1923 from 2400, we get 477.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

Step 12:
4770 divided by 641 is 7 with a remainder of 283.
The number 7 becomes the next digit in our result. 
Result so far: 136587.6037
The remainder is 283 after subtracting 4487 from 4770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

On to step 13:
When dividing 2830 by 641, we get 4 with a remainder of 266.
Use 4 as the next digit of our solution. 
Result so far: 136587.60374
If we subtract 2564 from 2830, we get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

On to step 14:
If we divide 2660 by 641, we get 4 and a remainder of 96.
Put 4 as the next digit of the answer. 
Result so far: 136587.603744
Deduct 2564 from 2660 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

In conclusion, the division gives 136587.603744 with a balance of 9.6e-06.