We're dividing 86294437 by 666 
Our goal is to divide 86294437 by 666.

Advancing to step 1:
If we divide 8 by 666, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 666

On to step 2:
If we divide 86 by 666, we get 0 and a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Append the next digit (2) from the dividend to 86 and continue with: 862 / 666

Going ahead to step 3:
When dividing 862 by 666, we get 1 with a remainder of 196.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 196 after subtracting 666 from 862.
Take the next digit (9) from the dividend and append it to 196, then repeat: 1969 / 666

Step 4:
When dividing 1969 by 666, we get 2 with a remainder of 637.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 1332 from 1969, we get 637.
Bring next digit (4) of the dividend behind the 637 and repeat the process: 6374 / 666

Step 5:
666 goes into 6374 9 times with a remainder of 380.
Write down 9 as next digit of the result. 
Result so far: 129.0
The remainder is 380 after subtracting 5994 from 6374.
Take the next digit (4) from the dividend and append it to 380, then repeat: 3804 / 666

Step 6:
3804 divided by 666 is 5 with a remainder of 474.
Write down 5 as next digit of the result. 
Result so far: 1295.0
If we take 3330 away from 3804, we end up with 474.
Grab the next digit (3) from the dividend, add it to 474, then carry on: 4743 / 666

Let's proceed to step 7:
If we divide 4743 by 666, we get 7 and a remainder of 81.
Write down 7 as next digit of the result. 
Result so far: 12957.0
Subtracting 4662 from 4743 leaves us with 81.
Include the next digit (7) from the dividend after 81, then repeat: 817 / 666

On to step 8:
666 goes into 817 1 times with a remainder of 151.
Use 1 as the next digit of our solution. 
Result so far: 129571.0
If we subtract 666 from 817, we get 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Moving on to step 9:
666 goes into 1510 2 times with a remainder of 178.
The next digit of our result is 2. 
Result so far: 129571.2
If we subtract 1332 from 1510, we get 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Step 10:
If we divide 1780 by 666, we get 2 and a remainder of 448.
The next digit of our result is 2. 
Result so far: 129571.22
If we subtract 1332 from 1780, we get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

After the division, we end up with 129571.22 and a remainder of 0.448.