Let's divide 644913 by 83
We're looking to find how many times 83 goes into 644913.

Step 1:
83 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 83

Going ahead to step 2:
When dividing 64 by 83, we get 0 with a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Append the next digit (4) from the dividend to 64 and continue with: 644 / 83

Step 3:
644 divided by 83 is 7 with a remainder of 63.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 581 from 644 leaves us with 63.
Take the next digit (9) from the dividend and append it to 63, then repeat: 639 / 83

Let's proceed to step 4:
639 divided by 83 is 7 with a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 77.0
Subtracting 581 from 639 leaves us with 58.
Grab the next digit (1) from the dividend, add it to 58, then carry on: 581 / 83

On to step 5:
The number 83 fits into 581 7 times, leaving a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 777.0
If we subtract 581 from 581, we get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 83

Let's proceed to step 6:
The number 83 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 7770.0
Subtracting 0 from 3 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
30 divided by 83 is 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 7770.0
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
300 divided by 83 is 3 with a remainder of 51.
The next digit of our result is 3. 
Result so far: 7770.03
If we subtract 249 from 300, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 9:
83 goes into 510 6 times with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 7770.036
The remainder is 12 after subtracting 498 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 10:
The number 83 fits into 120 1 times, leaving a remainder of 37.
Record the quotient 1 as the next digit in the result. 
Result so far: 7770.0361
If we subtract 83 from 120, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 11:
83 goes into 370 4 times with a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 7770.03614
Subtracting 332 from 370 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 12:
The number 83 fits into 380 4 times, leaving a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 7770.036144
The remainder is 48 after subtracting 332 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Our division results in 7770.036144 with a remaining 4.8e-06.