644325 ÷ 48 
Our goal is to divide 644325 by 48.

On to step 1:
6 divided by 48 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 48

Going ahead to step 2:
When dividing 64 by 48, we get 1 with a remainder of 16.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 48 from 64 leaves us with 16.
Include the next digit (4) from the dividend after 16, then repeat: 164 / 48

Going ahead to step 3:
The number 48 fits into 164 3 times, leaving a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we subtract 144 from 164, we get 20.
Include the next digit (3) from the dividend after 20, then repeat: 203 / 48

Moving on to step 4:
48 can be fit into 203 4 times, resulting in a remainder of 11.
The next digit of our result is 4. 
Result so far: 134.0
Subtract 192 from 203 to get 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 48

Let's proceed to step 5:
The number 48 fits into 112 2 times, leaving a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 1342.0
Deduct 96 from 112 and we're left with 16.
Bring next digit (5) of the dividend behind the 16 and repeat the process: 165 / 48

On to step 6:
When dividing 165 by 48, we get 3 with a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 13423.0
Deduct 144 from 165 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
If we divide 210 by 48, we get 4 and a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 13423.4
The remainder is 18 after subtracting 192 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 8:
The number 48 fits into 180 3 times, leaving a remainder of 36.
Use 3 as the next digit of our solution. 
Result so far: 13423.43
Subtract 144 from 180 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
48 can be fit into 360 7 times, resulting in a remainder of 24.
Record the quotient 7 as the next digit in the result. 
Result so far: 13423.437
The remainder is 24 after subtracting 336 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 10:
48 goes into 240 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 13423.4375
If we take 240 away from 240, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
The number 48 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 13423.4375
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 12:
48 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 13423.4375
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 13423.4375, and the remainder is 0.0.