83694033 ÷ 644 
We want to divide 83694033 by 644.

On to step 1:
When dividing 8 by 644, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 644

Let's proceed to step 2:
If we divide 83 by 644, we get 0 and a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Include the next digit (6) from the dividend after 83, then repeat: 836 / 644

Let's proceed to step 3:
836 divided by 644 is 1 with a remainder of 192.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 644 from 836, we get 192.
Take the next digit (9) from the dividend and append it to 192, then repeat: 1929 / 644

Going ahead to step 4:
The number 644 fits into 1929 2 times, leaving a remainder of 641.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 1288 away from 1929, we end up with 641.
Append the next digit (4) from the dividend to 641 and continue with: 6414 / 644

Step 5:
644 goes into 6414 9 times with a remainder of 618.
Record the quotient 9 as the next digit in the result. 
Result so far: 129.0
If we take 5796 away from 6414, we end up with 618.
Bring next digit (0) of the dividend behind the 618 and repeat the process: 6180 / 644

Going ahead to step 6:
When dividing 6180 by 644, we get 9 with a remainder of 384.
The number 9 becomes the next digit in our result. 
Result so far: 1299.0
The remainder is 384 after subtracting 5796 from 6180.
Take the next digit (3) from the dividend and append it to 384, then repeat: 3843 / 644

Going ahead to step 7:
644 can be fit into 3843 5 times, resulting in a remainder of 623.
Record the quotient 5 as the next digit in the result. 
Result so far: 12995.0
Deduct 3220 from 3843 and we're left with 623.
Include the next digit (3) from the dividend after 623, then repeat: 6233 / 644

On to step 8:
The number 644 fits into 6233 9 times, leaving a remainder of 437.
Put 9 as the next digit of the answer. 
Result so far: 129959.0
If we subtract 5796 from 6233, we get 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Let's proceed to step 9:
The number 644 fits into 4370 6 times, leaving a remainder of 506.
Write down 6 as next digit of the result. 
Result so far: 129959.6
The remainder is 506 after subtracting 3864 from 4370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Moving on to step 10:
When dividing 5060 by 644, we get 7 with a remainder of 552.
Put 7 as the next digit of the answer. 
Result so far: 129959.67
Subtract 4508 from 5060 to get 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Moving on to step 11:
When dividing 5520 by 644, we get 8 with a remainder of 368.
Record the quotient 8 as the next digit in the result. 
Result so far: 129959.678
If we subtract 5152 from 5520, we get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Step 12:
3680 divided by 644 is 5 with a remainder of 460.
Write down 5 as next digit of the result. 
Result so far: 129959.6785
The remainder is 460 after subtracting 3220 from 3680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Moving on to step 13:
644 can be fit into 4600 7 times, resulting in a remainder of 92.
Write down 7 as next digit of the result. 
Result so far: 129959.67857
Subtracting 4508 from 4600 leaves us with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Advancing to step 14:
If we divide 920 by 644, we get 1 and a remainder of 276.
The next digit of our result is 1. 
Result so far: 129959.678571
Subtracting 644 from 920 leaves us with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Let's proceed to step 15:
When dividing 2760 by 644, we get 4 with a remainder of 184.
The number 4 becomes the next digit in our result. 
Result so far: 129959.6785714
The remainder is 184 after subtracting 2576 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Advancing to step 16:
The number 644 fits into 1840 2 times, leaving a remainder of 552.
The next digit of our result is 2. 
Result so far: 129959.67857142
If we take 1288 away from 1840, we end up with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Our division results in 129959.67857142 with a remaining 5.52e-07.