90856597 ÷ 666 
We want to figure out the number of times 90856597 can be divided by 666.

Step 1:
666 can be fit into 9 0 times, resulting in a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 666

Going ahead to step 2:
If we divide 90 by 666, we get 0 and a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Take the next digit (8) from the dividend and append it to 90, then repeat: 908 / 666

On to step 3:
666 goes into 908 1 times with a remainder of 242.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 242 after subtracting 666 from 908.
Take the next digit (5) from the dividend and append it to 242, then repeat: 2425 / 666

On to step 4:
The number 666 fits into 2425 3 times, leaving a remainder of 427.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtracting 1998 from 2425 leaves us with 427.
Append the next digit (6) from the dividend to 427 and continue with: 4276 / 666

Moving on to step 5:
666 goes into 4276 6 times with a remainder of 280.
The number 6 becomes the next digit in our result. 
Result so far: 136.0
If we take 3996 away from 4276, we end up with 280.
Take the next digit (5) from the dividend and append it to 280, then repeat: 2805 / 666

Going ahead to step 6:
2805 divided by 666 is 4 with a remainder of 141.
The next digit of our result is 4. 
Result so far: 1364.0
Deduct 2664 from 2805 and we're left with 141.
Bring next digit (9) of the dividend behind the 141 and repeat the process: 1419 / 666

Let's proceed to step 7:
If we divide 1419 by 666, we get 2 and a remainder of 87.
Write down 2 as next digit of the result. 
Result so far: 13642.0
Subtract 1332 from 1419 to get 87.
Bring next digit (7) of the dividend behind the 87 and repeat the process: 877 / 666

Advancing to step 8:
666 can be fit into 877 1 times, resulting in a remainder of 211.
Put 1 as the next digit of the answer. 
Result so far: 136421.0
If we take 666 away from 877, we end up with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Moving on to step 9:
2110 divided by 666 is 3 with a remainder of 112.
Put 3 as the next digit of the answer. 
Result so far: 136421.3
Subtract 1998 from 2110 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 10:
666 goes into 1120 1 times with a remainder of 454.
The number 1 becomes the next digit in our result. 
Result so far: 136421.31
Subtract 666 from 1120 to get 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

On to step 11:
4540 divided by 666 is 6 with a remainder of 544.
Write down 6 as next digit of the result. 
Result so far: 136421.316
If we subtract 3996 from 4540, we get 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Moving on to step 12:
666 can be fit into 5440 8 times, resulting in a remainder of 112.
The next digit of our result is 8. 
Result so far: 136421.3168
Subtracting 5328 from 5440 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 13:
If we divide 1120 by 666, we get 1 and a remainder of 454.
Put 1 as the next digit of the answer. 
Result so far: 136421.31681
Deduct 666 from 1120 and we're left with 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

On to step 14:
666 goes into 4540 6 times with a remainder of 544.
The number 6 becomes the next digit in our result. 
Result so far: 136421.316816
If we take 3996 away from 4540, we end up with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Moving on to step 15:
5440 divided by 666 is 8 with a remainder of 112.
The number 8 becomes the next digit in our result. 
Result so far: 136421.3168168
If we subtract 5328 from 5440, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 16:
666 can be fit into 1120 1 times, resulting in a remainder of 454.
The next digit of our result is 1. 
Result so far: 136421.31681681
Subtracting 666 from 1120 leaves us with 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Our division results in 136421.31681681 with a remaining 4.54e-07.