We look at the division of 63903534 by 966 
We want to figure out the number of times 63903534 can be divided by 966.

Step 1:
If we divide 6 by 966, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 966

Step 2:
63 divided by 966 is 0 with a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Fetch the next digit (9) from the dividend, attach it to 63 and continue: 639 / 966

Step 3:
966 can be fit into 639 0 times, resulting in a remainder of 639.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 639 leaves us with 639.
Include the next digit (0) from the dividend after 639, then repeat: 6390 / 966

Step 4:
The number 966 fits into 6390 6 times, leaving a remainder of 594.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 5796 from 6390, we get 594.
Take the next digit (3) from the dividend and append it to 594, then repeat: 5943 / 966

Step 5:
966 goes into 5943 6 times with a remainder of 147.
Put 6 as the next digit of the answer. 
Result so far: 66.0
The remainder is 147 after subtracting 5796 from 5943.
Include the next digit (5) from the dividend after 147, then repeat: 1475 / 966

On to step 6:
966 can be fit into 1475 1 times, resulting in a remainder of 509.
Record the quotient 1 as the next digit in the result. 
Result so far: 661.0
Subtracting 966 from 1475 leaves us with 509.
Grab the next digit (3) from the dividend, add it to 509, then carry on: 5093 / 966

Let's proceed to step 7:
966 can be fit into 5093 5 times, resulting in a remainder of 263.
The next digit of our result is 5. 
Result so far: 6615.0
Subtracting 4830 from 5093 leaves us with 263.
Grab the next digit (4) from the dividend, add it to 263, then carry on: 2634 / 966

Advancing to step 8:
2634 divided by 966 is 2 with a remainder of 702.
Put 2 as the next digit of the answer. 
Result so far: 66152.0
If we subtract 1932 from 2634, we get 702.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

On to step 9:
966 can be fit into 7020 7 times, resulting in a remainder of 258.
Use 7 as the next digit of our solution. 
Result so far: 66152.7
If we subtract 6762 from 7020, we get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Let's proceed to step 10:
The number 966 fits into 2580 2 times, leaving a remainder of 648.
Put 2 as the next digit of the answer. 
Result so far: 66152.72
If we take 1932 away from 2580, we end up with 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Moving on to step 11:
When dividing 6480 by 966, we get 6 with a remainder of 684.
Write down 6 as next digit of the result. 
Result so far: 66152.726
Subtracting 5796 from 6480 leaves us with 684.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

Going ahead to step 12:
The number 966 fits into 6840 7 times, leaving a remainder of 78.
Record the quotient 7 as the next digit in the result. 
Result so far: 66152.7267
If we take 6762 away from 6840, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 13:
780 divided by 966 is 0 with a remainder of 780.
Write down 0 as next digit of the result. 
Result so far: 66152.7267
If we take 0 away from 780, we end up with 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Going ahead to step 14:
If we divide 7800 by 966, we get 8 and a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 66152.726708
The remainder is 72 after subtracting 7728 from 7800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 15:
If we divide 720 by 966, we get 0 and a remainder of 720.
Write down 0 as next digit of the result. 
Result so far: 66152.726708
Deduct 0 from 720 and we're left with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

On to step 16:
966 can be fit into 7200 7 times, resulting in a remainder of 438.
Record the quotient 7 as the next digit in the result. 
Result so far: 66152.72670807
The remainder is 438 after subtracting 6762 from 7200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

The quotient of the division is 66152.72670807, and the remainder is 4.38e-07.