66687443 ÷ 866 
We want to figure out the number of times 66687443 can be divided by 866.

On to step 1:
When dividing 6 by 866, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 866

Let's proceed to step 2:
866 goes into 66 0 times with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Include the next digit (6) from the dividend after 66, then repeat: 666 / 866

On to step 3:
866 goes into 666 0 times with a remainder of 666.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 666 and we're left with 666.
Take the next digit (8) from the dividend and append it to 666, then repeat: 6668 / 866

Step 4:
866 goes into 6668 7 times with a remainder of 606.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 6062 from 6668 leaves us with 606.
Fetch the next digit (7) from the dividend, attach it to 606 and continue: 6067 / 866

Let's proceed to step 5:
866 goes into 6067 7 times with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 77.0
If we take 6062 away from 6067, we end up with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 866

Going ahead to step 6:
54 divided by 866 is 0 with a remainder of 54.
Use 0 as the next digit of our solution. 
Result so far: 770.0
The remainder is 54 after subtracting 0 from 54.
Include the next digit (4) from the dividend after 54, then repeat: 544 / 866

On to step 7:
866 can be fit into 544 0 times, resulting in a remainder of 544.
The number 0 becomes the next digit in our result. 
Result so far: 7700.0
Deduct 0 from 544 and we're left with 544.
Take the next digit (3) from the dividend and append it to 544, then repeat: 5443 / 866

Moving on to step 8:
The number 866 fits into 5443 6 times, leaving a remainder of 247.
Put 6 as the next digit of the answer. 
Result so far: 77006.0
If we subtract 5196 from 5443, we get 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

On to step 9:
2470 divided by 866 is 2 with a remainder of 738.
Put 2 as the next digit of the answer. 
Result so far: 77006.2
Subtracting 1732 from 2470 leaves us with 738.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7380, and continue the process.

Moving on to step 10:
866 goes into 7380 8 times with a remainder of 452.
The next digit of our result is 8. 
Result so far: 77006.28
Subtracting 6928 from 7380 leaves us with 452.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

Let's proceed to step 11:
866 can be fit into 4520 5 times, resulting in a remainder of 190.
Write down 5 as next digit of the result. 
Result so far: 77006.285
If we take 4330 away from 4520, we end up with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Going ahead to step 12:
1900 divided by 866 is 2 with a remainder of 168.
Record the quotient 2 as the next digit in the result. 
Result so far: 77006.2852
Deduct 1732 from 1900 and we're left with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Advancing to step 13:
If we divide 1680 by 866, we get 1 and a remainder of 814.
Write down 1 as next digit of the result. 
Result so far: 77006.28521
If we subtract 866 from 1680, we get 814.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8140, and continue the process.

Step 14:
When dividing 8140 by 866, we get 9 with a remainder of 346.
Put 9 as the next digit of the answer. 
Result so far: 77006.285219
If we take 7794 away from 8140, we end up with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Advancing to step 15:
866 can be fit into 3460 3 times, resulting in a remainder of 862.
Use 3 as the next digit of our solution. 
Result so far: 77006.2852193
If we take 2598 away from 3460, we end up with 862.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8620, and continue the process.

Moving on to step 16:
866 goes into 8620 9 times with a remainder of 826.
Write down 9 as next digit of the result. 
Result so far: 77006.28521939
If we take 7794 away from 8620, we end up with 826.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8260, and continue the process.

The quotient of the division is 77006.28521939, and the remainder is 8.26e-07.