We look at the division of 90647891 by 641 
We want to divide 90647891 by 641.

Let's proceed to step 1:
641 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 641

Step 2:
641 goes into 90 0 times with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 90 and we're left with 90.
Bring next digit (6) of the dividend behind the 90 and repeat the process: 906 / 641

On to step 3:
The number 641 fits into 906 1 times, leaving a remainder of 265.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 641 from 906, we get 265.
Bring next digit (4) of the dividend behind the 265 and repeat the process: 2654 / 641

Let's proceed to step 4:
641 can be fit into 2654 4 times, resulting in a remainder of 90.
The next digit of our result is 4. 
Result so far: 14.0
If we subtract 2564 from 2654, we get 90.
Grab the next digit (7) from the dividend, add it to 90, then carry on: 907 / 641

Let's proceed to step 5:
The number 641 fits into 907 1 times, leaving a remainder of 266.
Put 1 as the next digit of the answer. 
Result so far: 141.0
The remainder is 266 after subtracting 641 from 907.
Bring next digit (8) of the dividend behind the 266 and repeat the process: 2668 / 641

On to step 6:
The number 641 fits into 2668 4 times, leaving a remainder of 104.
Use 4 as the next digit of our solution. 
Result so far: 1414.0
Subtract 2564 from 2668 to get 104.
Fetch the next digit (9) from the dividend, attach it to 104 and continue: 1049 / 641

Advancing to step 7:
641 goes into 1049 1 times with a remainder of 408.
Use 1 as the next digit of our solution. 
Result so far: 14141.0
Subtracting 641 from 1049 leaves us with 408.
Grab the next digit (1) from the dividend, add it to 408, then carry on: 4081 / 641

Step 8:
641 goes into 4081 6 times with a remainder of 235.
The number 6 becomes the next digit in our result. 
Result so far: 141416.0
The remainder is 235 after subtracting 3846 from 4081.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Step 9:
641 can be fit into 2350 3 times, resulting in a remainder of 427.
Write down 3 as next digit of the result. 
Result so far: 141416.3
If we subtract 1923 from 2350, we get 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Step 10:
The number 641 fits into 4270 6 times, leaving a remainder of 424.
Put 6 as the next digit of the answer. 
Result so far: 141416.36
Deduct 3846 from 4270 and we're left with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Let's proceed to step 11:
The number 641 fits into 4240 6 times, leaving a remainder of 394.
Put 6 as the next digit of the answer. 
Result so far: 141416.366
If we subtract 3846 from 4240, we get 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

The final result is 141416.366 with a remainder of 0.0394.