63961548 ÷ 666 
We're looking to find how many times 666 goes into 63961548.

Going ahead to step 1:
If we divide 6 by 666, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 666

Let's proceed to step 2:
If we divide 63 by 666, we get 0 and a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 666

On to step 3:
666 can be fit into 639 0 times, resulting in a remainder of 639.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 639 leaves us with 639.
Bring next digit (6) of the dividend behind the 639 and repeat the process: 6396 / 666

Advancing to step 4:
When dividing 6396 by 666, we get 9 with a remainder of 402.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 5994 from 6396 leaves us with 402.
Take the next digit (1) from the dividend and append it to 402, then repeat: 4021 / 666

On to step 5:
666 can be fit into 4021 6 times, resulting in a remainder of 25.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
Subtracting 3996 from 4021 leaves us with 25.
Take the next digit (5) from the dividend and append it to 25, then repeat: 255 / 666

Going ahead to step 6:
The number 666 fits into 255 0 times, leaving a remainder of 255.
The next digit of our result is 0. 
Result so far: 960.0
Deduct 0 from 255 and we're left with 255.
Fetch the next digit (4) from the dividend, attach it to 255 and continue: 2554 / 666

Going ahead to step 7:
When dividing 2554 by 666, we get 3 with a remainder of 556.
Record the quotient 3 as the next digit in the result. 
Result so far: 9603.0
Subtracting 1998 from 2554 leaves us with 556.
Fetch the next digit (8) from the dividend, attach it to 556 and continue: 5568 / 666

On to step 8:
When dividing 5568 by 666, we get 8 with a remainder of 240.
The number 8 becomes the next digit in our result. 
Result so far: 96038.0
Deduct 5328 from 5568 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 9:
2400 divided by 666 is 3 with a remainder of 402.
Use 3 as the next digit of our solution. 
Result so far: 96038.3
The remainder is 402 after subtracting 1998 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Going ahead to step 10:
The number 666 fits into 4020 6 times, leaving a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 96038.36
If we take 3996 away from 4020, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
The number 666 fits into 240 0 times, leaving a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 96038.36
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 12:
When dividing 2400 by 666, we get 3 with a remainder of 402.
Record the quotient 3 as the next digit in the result. 
Result so far: 96038.3603
If we subtract 1998 from 2400, we get 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Let's proceed to step 13:
If we divide 4020 by 666, we get 6 and a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 96038.36036
Deduct 3996 from 4020 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 14:
666 can be fit into 240 0 times, resulting in a remainder of 240.
Use 0 as the next digit of our solution. 
Result so far: 96038.36036
If we take 0 away from 240, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 15:
If we divide 2400 by 666, we get 3 and a remainder of 402.
The next digit of our result is 3. 
Result so far: 96038.3603603
The remainder is 402 after subtracting 1998 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Step 16:
4020 divided by 666 is 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 96038.36036036
Deduct 3996 from 4020 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 96038.36036036 with a remainder of 2.4e-08.