68373815 ÷ 666 
We want to figure out the number of times 68373815 can be divided by 666.

Advancing to step 1:
The number 666 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 666

Moving on to step 2:
666 can be fit into 68 0 times, resulting in a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Append the next digit (3) from the dividend to 68 and continue with: 683 / 666

Advancing to step 3:
The number 666 fits into 683 1 times, leaving a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 666 from 683 leaves us with 17.
Fetch the next digit (7) from the dividend, attach it to 17 and continue: 177 / 666

Let's proceed to step 4:
666 goes into 177 0 times with a remainder of 177.
Use 0 as the next digit of our solution. 
Result so far: 10.0
The remainder is 177 after subtracting 0 from 177.
Take the next digit (3) from the dividend and append it to 177, then repeat: 1773 / 666

Let's proceed to step 5:
666 can be fit into 1773 2 times, resulting in a remainder of 441.
Put 2 as the next digit of the answer. 
Result so far: 102.0
If we subtract 1332 from 1773, we get 441.
Take the next digit (8) from the dividend and append it to 441, then repeat: 4418 / 666

Going ahead to step 6:
666 can be fit into 4418 6 times, resulting in a remainder of 422.
The number 6 becomes the next digit in our result. 
Result so far: 1026.0
Deduct 3996 from 4418 and we're left with 422.
Bring next digit (1) of the dividend behind the 422 and repeat the process: 4221 / 666

Going ahead to step 7:
The number 666 fits into 4221 6 times, leaving a remainder of 225.
Use 6 as the next digit of our solution. 
Result so far: 10266.0
If we subtract 3996 from 4221, we get 225.
Include the next digit (5) from the dividend after 225, then repeat: 2255 / 666

Moving on to step 8:
666 goes into 2255 3 times with a remainder of 257.
Put 3 as the next digit of the answer. 
Result so far: 102663.0
Subtracting 1998 from 2255 leaves us with 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Advancing to step 9:
The number 666 fits into 2570 3 times, leaving a remainder of 572.
Record the quotient 3 as the next digit in the result. 
Result so far: 102663.3
Deduct 1998 from 2570 and we're left with 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

Moving on to step 10:
666 goes into 5720 8 times with a remainder of 392.
Use 8 as the next digit of our solution. 
Result so far: 102663.38
The remainder is 392 after subtracting 5328 from 5720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Advancing to step 11:
When dividing 3920 by 666, we get 5 with a remainder of 590.
The next digit of our result is 5. 
Result so far: 102663.385
Subtracting 3330 from 3920 leaves us with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Advancing to step 12:
When dividing 5900 by 666, we get 8 with a remainder of 572.
The number 8 becomes the next digit in our result. 
Result so far: 102663.3858
Deduct 5328 from 5900 and we're left with 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

Advancing to step 13:
666 can be fit into 5720 8 times, resulting in a remainder of 392.
Use 8 as the next digit of our solution. 
Result so far: 102663.38588
Subtract 5328 from 5720 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

In conclusion, the division gives 102663.38588 with a balance of 0.000392.