85105866 ÷ 684 
We want to figure out the number of times 85105866 can be divided by 684.

Let's proceed to step 1:
684 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 684

Advancing to step 2:
85 divided by 684 is 0 with a remainder of 85.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 85, we end up with 85.
Bring next digit (1) of the dividend behind the 85 and repeat the process: 851 / 684

On to step 3:
684 goes into 851 1 times with a remainder of 167.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 684 away from 851, we end up with 167.
Include the next digit (0) from the dividend after 167, then repeat: 1670 / 684

Moving on to step 4:
The number 684 fits into 1670 2 times, leaving a remainder of 302.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 1368 from 1670 leaves us with 302.
Append the next digit (5) from the dividend to 302 and continue with: 3025 / 684

Moving on to step 5:
If we divide 3025 by 684, we get 4 and a remainder of 289.
Record the quotient 4 as the next digit in the result. 
Result so far: 124.0
If we subtract 2736 from 3025, we get 289.
Append the next digit (8) from the dividend to 289 and continue with: 2898 / 684

Advancing to step 6:
684 can be fit into 2898 4 times, resulting in a remainder of 162.
Write down 4 as next digit of the result. 
Result so far: 1244.0
If we take 2736 away from 2898, we end up with 162.
Fetch the next digit (6) from the dividend, attach it to 162 and continue: 1626 / 684

On to step 7:
1626 divided by 684 is 2 with a remainder of 258.
Put 2 as the next digit of the answer. 
Result so far: 12442.0
If we take 1368 away from 1626, we end up with 258.
Include the next digit (6) from the dividend after 258, then repeat: 2586 / 684

On to step 8:
The number 684 fits into 2586 3 times, leaving a remainder of 534.
Write down 3 as next digit of the result. 
Result so far: 124423.0
The remainder is 534 after subtracting 2052 from 2586.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

Step 9:
684 can be fit into 5340 7 times, resulting in a remainder of 552.
Put 7 as the next digit of the answer. 
Result so far: 124423.7
Deduct 4788 from 5340 and we're left with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Moving on to step 10:
If we divide 5520 by 684, we get 8 and a remainder of 48.
The next digit of our result is 8. 
Result so far: 124423.78
Deduct 5472 from 5520 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 11:
When dividing 480 by 684, we get 0 with a remainder of 480.
Put 0 as the next digit of the answer. 
Result so far: 124423.78
Subtracting 0 from 480 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 12:
When dividing 4800 by 684, we get 7 with a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 124423.7807
Subtracting 4788 from 4800 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 13:
120 divided by 684 is 0 with a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 124423.7807
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 14:
684 goes into 1200 1 times with a remainder of 516.
Write down 1 as next digit of the result. 
Result so far: 124423.780701
Deduct 684 from 1200 and we're left with 516.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5160, and continue the process.

Going ahead to step 15:
If we divide 5160 by 684, we get 7 and a remainder of 372.
Use 7 as the next digit of our solution. 
Result so far: 124423.7807017
If we subtract 4788 from 5160, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Step 16:
684 can be fit into 3720 5 times, resulting in a remainder of 300.
Record the quotient 5 as the next digit in the result. 
Result so far: 124423.78070175
If we take 3420 away from 3720, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The final outcome is 124423.78070175, with a leftover of 3e-07.