87439094 divided by 641 
We're looking to find how many times 641 goes into 87439094.

Going ahead to step 1:
8 divided by 641 is 0 with 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.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 641

Advancing to step 2:
641 can be fit into 87 0 times, resulting in a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Bring next digit (4) of the dividend behind the 87 and repeat the process: 874 / 641

Moving on to step 3:
641 can be fit into 874 1 times, resulting in a remainder of 233.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 641 away from 874, we end up with 233.
Append the next digit (3) from the dividend to 233 and continue with: 2333 / 641

Let's proceed to step 4:
641 can be fit into 2333 3 times, resulting in a remainder of 410.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtracting 1923 from 2333 leaves us with 410.
Include the next digit (9) from the dividend after 410, then repeat: 4109 / 641

Advancing to step 5:
The number 641 fits into 4109 6 times, leaving a remainder of 263.
Write down 6 as next digit of the result. 
Result so far: 136.0
If we take 3846 away from 4109, we end up with 263.
Grab the next digit (0) from the dividend, add it to 263, then carry on: 2630 / 641

Step 6:
When dividing 2630 by 641, we get 4 with a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 1364.0
Subtract 2564 from 2630 to get 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 641

Going ahead to step 7:
641 can be fit into 669 1 times, resulting in a remainder of 28.
Use 1 as the next digit of our solution. 
Result so far: 13641.0
If we subtract 641 from 669, we get 28.
Append the next digit (4) from the dividend to 28 and continue with: 284 / 641

Step 8:
641 goes into 284 0 times with a remainder of 284.
The number 0 becomes the next digit in our result. 
Result so far: 136410.0
Subtracting 0 from 284 leaves us with 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Let's proceed to step 9:
If we divide 2840 by 641, we get 4 and a remainder of 276.
The next digit of our result is 4. 
Result so far: 136410.4
If we take 2564 away from 2840, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Going ahead to step 10:
2760 divided by 641 is 4 with a remainder of 196.
Record the quotient 4 as the next digit in the result. 
Result so far: 136410.44
Deduct 2564 from 2760 and we're left with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

The final result is 136410.44 with a remainder of 0.196.