We look at the division of 90636818 by 639 
Our goal is to divide 90636818 by 639.

Moving on to step 1:
639 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 639

On to step 2:
90 divided by 639 is 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Fetch the next digit (6) from the dividend, attach it to 90 and continue: 906 / 639

Going ahead to step 3:
When dividing 906 by 639, we get 1 with a remainder of 267.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 639 from 906 leaves us with 267.
Bring next digit (3) of the dividend behind the 267 and repeat the process: 2673 / 639

Moving on to step 4:
The number 639 fits into 2673 4 times, leaving a remainder of 117.
The next digit of our result is 4. 
Result so far: 14.0
Subtract 2556 from 2673 to get 117.
Grab the next digit (6) from the dividend, add it to 117, then carry on: 1176 / 639

Let's proceed to step 5:
639 can be fit into 1176 1 times, resulting in a remainder of 537.
The number 1 becomes the next digit in our result. 
Result so far: 141.0
If we subtract 639 from 1176, we get 537.
Append the next digit (8) from the dividend to 537 and continue with: 5378 / 639

Step 6:
If we divide 5378 by 639, we get 8 and a remainder of 266.
Record the quotient 8 as the next digit in the result. 
Result so far: 1418.0
Subtracting 5112 from 5378 leaves us with 266.
Take the next digit (1) from the dividend and append it to 266, then repeat: 2661 / 639

On to step 7:
When dividing 2661 by 639, we get 4 with a remainder of 105.
Write down 4 as next digit of the result. 
Result so far: 14184.0
Deduct 2556 from 2661 and we're left with 105.
Fetch the next digit (8) from the dividend, attach it to 105 and continue: 1058 / 639

Going ahead to step 8:
The number 639 fits into 1058 1 times, leaving a remainder of 419.
Record the quotient 1 as the next digit in the result. 
Result so far: 141841.0
Deduct 639 from 1058 and we're left with 419.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

Advancing to step 9:
4190 divided by 639 is 6 with a remainder of 356.
The number 6 becomes the next digit in our result. 
Result so far: 141841.6
If we subtract 3834 from 4190, we get 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

On to step 10:
639 can be fit into 3560 5 times, resulting in a remainder of 365.
Use 5 as the next digit of our solution. 
Result so far: 141841.65
The remainder is 365 after subtracting 3195 from 3560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Moving on to step 11:
639 goes into 3650 5 times with a remainder of 455.
The number 5 becomes the next digit in our result. 
Result so far: 141841.655
The remainder is 455 after subtracting 3195 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

The quotient of the division is 141841.655, and the remainder is 0.0455.