86618990 ÷ 126 
Our goal is to divide 86618990 by 126.

Moving on to step 1:
When dividing 8 by 126, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 126

Advancing to step 2:
When dividing 86 by 126, we get 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Include the next digit (6) from the dividend after 86, then repeat: 866 / 126

Moving on to step 3:
126 can be fit into 866 6 times, resulting in a remainder of 110.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 110 after subtracting 756 from 866.
Append the next digit (1) from the dividend to 110 and continue with: 1101 / 126

Step 4:
1101 divided by 126 is 8 with a remainder of 93.
The next digit of our result is 8. 
Result so far: 68.0
Subtracting 1008 from 1101 leaves us with 93.
Grab the next digit (8) from the dividend, add it to 93, then carry on: 938 / 126

Moving on to step 5:
When dividing 938 by 126, we get 7 with a remainder of 56.
Use 7 as the next digit of our solution. 
Result so far: 687.0
Subtract 882 from 938 to get 56.
Take the next digit (9) from the dividend and append it to 56, then repeat: 569 / 126

Moving on to step 6:
When dividing 569 by 126, we get 4 with a remainder of 65.
Write down 4 as next digit of the result. 
Result so far: 6874.0
Deduct 504 from 569 and we're left with 65.
Grab the next digit (9) from the dividend, add it to 65, then carry on: 659 / 126

Let's proceed to step 7:
126 goes into 659 5 times with a remainder of 29.
Record the quotient 5 as the next digit in the result. 
Result so far: 68745.0
Deduct 630 from 659 and we're left with 29.
Grab the next digit (0) from the dividend, add it to 29, then carry on: 290 / 126

On to step 8:
290 divided by 126 is 2 with a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 687452.0
Subtracting 252 from 290 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 9:
If we divide 380 by 126, we get 3 and a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 687452.3
If we subtract 378 from 380, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
When dividing 20 by 126, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 687452.3
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
If we divide 200 by 126, we get 1 and a remainder of 74.
The next digit of our result is 1. 
Result so far: 687452.301
Subtract 126 from 200 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 12:
126 can be fit into 740 5 times, resulting in a remainder of 110.
Use 5 as the next digit of our solution. 
Result so far: 687452.3015
Subtracting 630 from 740 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 13:
The number 126 fits into 1100 8 times, leaving a remainder of 92.
The next digit of our result is 8. 
Result so far: 687452.30158
Subtracting 1008 from 1100 leaves us with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Advancing to step 14:
If we divide 920 by 126, we get 7 and a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 687452.301587
The remainder is 38 after subtracting 882 from 920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 15:
380 divided by 126 is 3 with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 687452.3015873
The remainder is 2 after subtracting 378 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 16:
20 divided by 126 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 687452.3015873
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 687452.3015873 with a remaining 2e-08.