Let's divide 90129994 by 641
Our goal is to divide 90129994 by 641.

Advancing to step 1:
641 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 641

Let's proceed to step 2:
When dividing 90 by 641, we get 0 with a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 90 and we're left with 90.
Append the next digit (1) from the dividend to 90 and continue with: 901 / 641

On to step 3:
901 divided by 641 is 1 with a remainder of 260.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 260 after subtracting 641 from 901.
Include the next digit (2) from the dividend after 260, then repeat: 2602 / 641

Let's proceed to step 4:
When dividing 2602 by 641, we get 4 with a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 2564 from 2602, we get 38.
Include the next digit (9) from the dividend after 38, then repeat: 389 / 641

Advancing to step 5:
641 can be fit into 389 0 times, resulting in a remainder of 389.
The next digit of our result is 0. 
Result so far: 140.0
Deduct 0 from 389 and we're left with 389.
Grab the next digit (9) from the dividend, add it to 389, then carry on: 3899 / 641

Step 6:
The number 641 fits into 3899 6 times, leaving a remainder of 53.
The next digit of our result is 6. 
Result so far: 1406.0
Deduct 3846 from 3899 and we're left with 53.
Grab the next digit (9) from the dividend, add it to 53, then carry on: 539 / 641

Moving on to step 7:
539 divided by 641 is 0 with a remainder of 539.
The next digit of our result is 0. 
Result so far: 14060.0
Deduct 0 from 539 and we're left with 539.
Append the next digit (4) from the dividend to 539 and continue with: 5394 / 641

Advancing to step 8:
5394 divided by 641 is 8 with a remainder of 266.
Put 8 as the next digit of the answer. 
Result so far: 140608.0
Deduct 5128 from 5394 and we're left with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Moving on to step 9:
When dividing 2660 by 641, we get 4 with a remainder of 96.
The number 4 becomes the next digit in our result. 
Result so far: 140608.4
Subtracting 2564 from 2660 leaves us 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.

Moving on to step 10:
641 can be fit into 960 1 times, resulting in a remainder of 319.
Write down 1 as next digit of the result. 
Result so far: 140608.41
Subtracting 641 from 960 leaves us with 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

On to step 11:
641 can be fit into 3190 4 times, resulting in a remainder of 626.
Use 4 as the next digit of our solution. 
Result so far: 140608.414
Subtracting 2564 from 3190 leaves us with 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

Moving on to step 12:
If we divide 6260 by 641, we get 9 and a remainder of 491.
Put 9 as the next digit of the answer. 
Result so far: 140608.4149
The remainder is 491 after subtracting 5769 from 6260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Step 13:
The number 641 fits into 4910 7 times, leaving a remainder of 423.
The next digit of our result is 7. 
Result so far: 140608.41497
Subtracting 4487 from 4910 leaves us with 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Let's proceed to step 14:
If we divide 4230 by 641, we get 6 and a remainder of 384.
Put 6 as the next digit of the answer. 
Result so far: 140608.414976
The remainder is 384 after subtracting 3846 from 4230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Let's proceed to step 15:
3840 divided by 641 is 5 with a remainder of 635.
Write down 5 as next digit of the result. 
Result so far: 140608.4149765
If we take 3205 away from 3840, we end up with 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Moving on to step 16:
When dividing 6350 by 641, we get 9 with a remainder of 581.
Record the quotient 9 as the next digit in the result. 
Result so far: 140608.41497659
Subtract 5769 from 6350 to get 581.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

After the division, we end up with 140608.41497659 and a remainder of 5.81e-07.