83328963 ÷ 644 
We're looking to find how many times 644 goes into 83328963.

Step 1:
644 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 644

Going ahead to step 2:
If we divide 83 by 644, we get 0 and a remainder of 83.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 83, we end up with 83.
Include the next digit (3) from the dividend after 83, then repeat: 833 / 644

Going ahead to step 3:
644 can be fit into 833 1 times, resulting in a remainder of 189.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 644 away from 833, we end up with 189.
Take the next digit (2) from the dividend and append it to 189, then repeat: 1892 / 644

Let's proceed to step 4:
644 goes into 1892 2 times with a remainder of 604.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 1288 from 1892 leaves us with 604.
Take the next digit (8) from the dividend and append it to 604, then repeat: 6048 / 644

Moving on to step 5:
644 can be fit into 6048 9 times, resulting in a remainder of 252.
Put 9 as the next digit of the answer. 
Result so far: 129.0
Subtract 5796 from 6048 to get 252.
Include the next digit (9) from the dividend after 252, then repeat: 2529 / 644

On to step 6:
2529 divided by 644 is 3 with a remainder of 597.
The number 3 becomes the next digit in our result. 
Result so far: 1293.0
Subtract 1932 from 2529 to get 597.
Take the next digit (6) from the dividend and append it to 597, then repeat: 5976 / 644

Moving on to step 7:
644 goes into 5976 9 times with a remainder of 180.
Record the quotient 9 as the next digit in the result. 
Result so far: 12939.0
If we take 5796 away from 5976, we end up with 180.
Grab the next digit (3) from the dividend, add it to 180, then carry on: 1803 / 644

Let's proceed to step 8:
The number 644 fits into 1803 2 times, leaving a remainder of 515.
Record the quotient 2 as the next digit in the result. 
Result so far: 129392.0
If we take 1288 away from 1803, we end up with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Let's proceed to step 9:
If we divide 5150 by 644, we get 7 and a remainder of 642.
The number 7 becomes the next digit in our result. 
Result so far: 129392.7
The remainder is 642 after subtracting 4508 from 5150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6420, and continue the process.

Let's proceed to step 10:
6420 divided by 644 is 9 with a remainder of 624.
The number 9 becomes the next digit in our result. 
Result so far: 129392.79
Subtract 5796 from 6420 to get 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Step 11:
When dividing 6240 by 644, we get 9 with a remainder of 444.
Record the quotient 9 as the next digit in the result. 
Result so far: 129392.799
If we subtract 5796 from 6240, we get 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

The quotient of the division is 129392.799, and the remainder is 0.0444.