9663541 divided by 646 
We want to figure out the number of times 9663541 can be divided by 646.

Going ahead to step 1:
646 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 646

Going ahead to step 2:
When dividing 96 by 646, we get 0 with a remainder of 96.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 96 leaves us with 96.
Include the next digit (6) from the dividend after 96, then repeat: 966 / 646

Step 3:
646 goes into 966 1 times with a remainder of 320.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 646 from 966, we get 320.
Bring next digit (3) of the dividend behind the 320 and repeat the process: 3203 / 646

Step 4:
When dividing 3203 by 646, we get 4 with a remainder of 619.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Subtracting 2584 from 3203 leaves us with 619.
Include the next digit (5) from the dividend after 619, then repeat: 6195 / 646

On to step 5:
6195 divided by 646 is 9 with a remainder of 381.
The number 9 becomes the next digit in our result. 
Result so far: 149.0
Subtracting 5814 from 6195 leaves us with 381.
Bring next digit (4) of the dividend behind the 381 and repeat the process: 3814 / 646

Let's proceed to step 6:
If we divide 3814 by 646, we get 5 and a remainder of 584.
Record the quotient 5 as the next digit in the result. 
Result so far: 1495.0
Subtracting 3230 from 3814 leaves us with 584.
Include the next digit (1) from the dividend after 584, then repeat: 5841 / 646

Let's proceed to step 7:
646 goes into 5841 9 times with a remainder of 27.
Put 9 as the next digit of the answer. 
Result so far: 14959.0
Deduct 5814 from 5841 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 8:
646 can be fit into 270 0 times, resulting in a remainder of 270.
Write down 0 as next digit of the result. 
Result so far: 14959.0
The remainder is 270 after subtracting 0 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 9:
The number 646 fits into 2700 4 times, leaving a remainder of 116.
The number 4 becomes the next digit in our result. 
Result so far: 14959.04
The remainder is 116 after subtracting 2584 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Step 10:
When dividing 1160 by 646, we get 1 with a remainder of 514.
Use 1 as the next digit of our solution. 
Result so far: 14959.041
Subtracting 646 from 1160 leaves us with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Let's proceed to step 11:
5140 divided by 646 is 7 with a remainder of 618.
Use 7 as the next digit of our solution. 
Result so far: 14959.0417
Deduct 4522 from 5140 and we're left with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

On to step 12:
If we divide 6180 by 646, we get 9 and a remainder of 366.
Put 9 as the next digit of the answer. 
Result so far: 14959.04179
If we take 5814 away from 6180, we end up with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Advancing to step 13:
3660 divided by 646 is 5 with a remainder of 430.
Put 5 as the next digit of the answer. 
Result so far: 14959.041795
Subtract 3230 from 3660 to get 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Advancing to step 14:
646 goes into 4300 6 times with a remainder of 424.
The number 6 becomes the next digit in our result. 
Result so far: 14959.0417956
Subtract 3876 from 4300 to get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Step 15:
646 goes into 4240 6 times with a remainder of 364.
Record the quotient 6 as the next digit in the result. 
Result so far: 14959.04179566
If we subtract 3876 from 4240, we get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

The final result is 14959.04179566 with a remainder of 3.64e-07.