We divide 644172 by 97
We want to divide 644172 by 97.

Step 1:
If we divide 6 by 97, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 97

Going ahead to step 2:
97 can be fit into 64 0 times, resulting in a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Bring next digit (4) of the dividend behind the 64 and repeat the process: 644 / 97

Advancing to step 3:
97 goes into 644 6 times with a remainder of 62.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 582 from 644, we get 62.
Grab the next digit (1) from the dividend, add it to 62, then carry on: 621 / 97

Step 4:
97 goes into 621 6 times with a remainder of 39.
The next digit of our result is 6. 
Result so far: 66.0
If we subtract 582 from 621, we get 39.
Bring next digit (7) of the dividend behind the 39 and repeat the process: 397 / 97

Let's proceed to step 5:
If we divide 397 by 97, we get 4 and a remainder of 9.
Use 4 as the next digit of our solution. 
Result so far: 664.0
Deduct 388 from 397 and we're left with 9.
Fetch the next digit (2) from the dividend, attach it to 9 and continue: 92 / 97

Moving on to step 6:
97 goes into 92 0 times with a remainder of 92.
Put 0 as the next digit of the answer. 
Result so far: 6640.0
The remainder is 92 after subtracting 0 from 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Let's proceed to step 7:
If we divide 920 by 97, we get 9 and a remainder of 47.
Write down 9 as next digit of the result. 
Result so far: 6640.9
If we subtract 873 from 920, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 8:
The number 97 fits into 470 4 times, leaving a remainder of 82.
Write down 4 as next digit of the result. 
Result so far: 6640.94
Subtract 388 from 470 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 9:
If we divide 820 by 97, we get 8 and a remainder of 44.
Use 8 as the next digit of our solution. 
Result so far: 6640.948
Subtract 776 from 820 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 10:
97 can be fit into 440 4 times, resulting in a remainder of 52.
The number 4 becomes the next digit in our result. 
Result so far: 6640.9484
Deduct 388 from 440 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 11:
If we divide 520 by 97, we get 5 and a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 6640.94845
If we subtract 485 from 520, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 12:
350 divided by 97 is 3 with a remainder of 59.
Use 3 as the next digit of our solution. 
Result so far: 6640.948453
Subtract 291 from 350 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 13:
When dividing 590 by 97, we get 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 6640.9484536
Subtracting 582 from 590 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 14:
The number 97 fits into 80 0 times, leaving a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 6640.9484536
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 6640.9484536, with a leftover of 8e-08.