42555098 ÷ 636 
Our goal is to divide 42555098 by 636.

Advancing to step 1:
The number 636 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 636

Advancing to step 2:
42 divided by 636 is 0 with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 636

Going ahead to step 3:
636 goes into 425 0 times with a remainder of 425.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 425, we get 425.
Take the next digit (5) from the dividend and append it to 425, then repeat: 4255 / 636

On to step 4:
4255 divided by 636 is 6 with a remainder of 439.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtracting 3816 from 4255 leaves us with 439.
Fetch the next digit (5) from the dividend, attach it to 439 and continue: 4395 / 636

Step 5:
636 goes into 4395 6 times with a remainder of 579.
Write down 6 as next digit of the result. 
Result so far: 66.0
If we take 3816 away from 4395, we end up with 579.
Grab the next digit (0) from the dividend, add it to 579, then carry on: 5790 / 636

Moving on to step 6:
The number 636 fits into 5790 9 times, leaving a remainder of 66.
The number 9 becomes the next digit in our result. 
Result so far: 669.0
If we subtract 5724 from 5790, we get 66.
Append the next digit (9) from the dividend to 66 and continue with: 669 / 636

Step 7:
If we divide 669 by 636, we get 1 and a remainder of 33.
The next digit of our result is 1. 
Result so far: 6691.0
Deduct 636 from 669 and we're left with 33.
Grab the next digit (8) from the dividend, add it to 33, then carry on: 338 / 636

On to step 8:
636 can be fit into 338 0 times, resulting in a remainder of 338.
Use 0 as the next digit of our solution. 
Result so far: 66910.0
Subtract 0 from 338 to get 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Going ahead to step 9:
636 can be fit into 3380 5 times, resulting in a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 66910.5
If we take 3180 away from 3380, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 10:
636 goes into 2000 3 times with a remainder of 92.
Record the quotient 3 as the next digit in the result. 
Result so far: 66910.53
The remainder is 92 after subtracting 1908 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

On to step 11:
When dividing 920 by 636, we get 1 with a remainder of 284.
Record the quotient 1 as the next digit in the result. 
Result so far: 66910.531
Deduct 636 from 920 and we're left 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.

On to step 12:
When dividing 2840 by 636, we get 4 with a remainder of 296.
The next digit of our result is 4. 
Result so far: 66910.5314
Deduct 2544 from 2840 and we're left with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Advancing to step 13:
If we divide 2960 by 636, we get 4 and a remainder of 416.
Write down 4 as next digit of the result. 
Result so far: 66910.53144
Deduct 2544 from 2960 and we're left with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

The final outcome is 66910.53144, with a leftover of 0.000416.