We're dividing 66786636 by 637 
We want to figure out the number of times 66786636 can be divided by 637.

Step 1:
637 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 637

Going ahead to step 2:
637 goes into 66 0 times with a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Append the next digit (7) from the dividend to 66 and continue with: 667 / 637

On to step 3:
637 can be fit into 667 1 times, resulting in a remainder of 30.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 30 after subtracting 637 from 667.
Take the next digit (8) from the dividend and append it to 30, then repeat: 308 / 637

On to step 4:
637 can be fit into 308 0 times, resulting in a remainder of 308.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 308 and we're left with 308.
Fetch the next digit (6) from the dividend, attach it to 308 and continue: 3086 / 637

Step 5:
When dividing 3086 by 637, we get 4 with a remainder of 538.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
Subtracting 2548 from 3086 leaves us with 538.
Fetch the next digit (6) from the dividend, attach it to 538 and continue: 5386 / 637

On to step 6:
If we divide 5386 by 637, we get 8 and a remainder of 290.
Write down 8 as next digit of the result. 
Result so far: 1048.0
The remainder is 290 after subtracting 5096 from 5386.
Grab the next digit (3) from the dividend, add it to 290, then carry on: 2903 / 637

Let's proceed to step 7:
637 goes into 2903 4 times with a remainder of 355.
Use 4 as the next digit of our solution. 
Result so far: 10484.0
Subtract 2548 from 2903 to get 355.
Include the next digit (6) from the dividend after 355, then repeat: 3556 / 637

On to step 8:
When dividing 3556 by 637, we get 5 with a remainder of 371.
The next digit of our result is 5. 
Result so far: 104845.0
Deduct 3185 from 3556 and we're left with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Let's proceed to step 9:
When dividing 3710 by 637, we get 5 with a remainder of 525.
The next digit of our result is 5. 
Result so far: 104845.5
The remainder is 525 after subtracting 3185 from 3710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Advancing to step 10:
5250 divided by 637 is 8 with a remainder of 154.
The next digit of our result is 8. 
Result so far: 104845.58
The remainder is 154 after subtracting 5096 from 5250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Advancing to step 11:
637 goes into 1540 2 times with a remainder of 266.
The number 2 becomes the next digit in our result. 
Result so far: 104845.582
Subtract 1274 from 1540 to get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

On to step 12:
If we divide 2660 by 637, we get 4 and a remainder of 112.
Record the quotient 4 as the next digit in the result. 
Result so far: 104845.5824
Subtract 2548 from 2660 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 13:
637 can be fit into 1120 1 times, resulting in a remainder of 483.
Record the quotient 1 as the next digit in the result. 
Result so far: 104845.58241
If we subtract 637 from 1120, we get 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

On to step 14:
4830 divided by 637 is 7 with a remainder of 371.
The next digit of our result is 7. 
Result so far: 104845.582417
Subtract 4459 from 4830 to get 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Moving on to step 15:
3710 divided by 637 is 5 with a remainder of 525.
Use 5 as the next digit of our solution. 
Result so far: 104845.5824175
If we subtract 3185 from 3710, we get 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Let's proceed to step 16:
The number 637 fits into 5250 8 times, leaving a remainder of 154.
Record the quotient 8 as the next digit in the result. 
Result so far: 104845.58241758
Subtracting 5096 from 5250 leaves us with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

The final result is 104845.58241758 with a remainder of 1.54e-07.