We divide 640458 by 48
We want to divide 640458 by 48.

Let's proceed to step 1:
6 divided by 48 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 48

Moving on 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
The remainder is 16 after subtracting 48 from 64.
Grab the next digit (0) from the dividend, add it to 16, then carry on: 160 / 48

Let's proceed to step 3:
48 can be fit into 160 3 times, resulting in a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we subtract 144 from 160, we get 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 48

Moving on to step 4:
164 divided by 48 is 3 with a remainder of 20.
The next digit of our result is 3. 
Result so far: 133.0
Subtract 144 from 164 to get 20.
Append the next digit (5) from the dividend to 20 and continue with: 205 / 48

Going ahead to step 5:
If we divide 205 by 48, we get 4 and a remainder of 13.
The number 4 becomes the next digit in our result. 
Result so far: 1334.0
If we take 192 away from 205, we end up with 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 48

On to step 6:
138 divided by 48 is 2 with a remainder of 42.
The next digit of our result is 2. 
Result so far: 13342.0
The remainder is 42 after subtracting 96 from 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 7:
If we divide 420 by 48, we get 8 and a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 13342.8
The remainder is 36 after subtracting 384 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 8:
360 divided by 48 is 7 with a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 13342.87
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.

Advancing to step 9:
The number 48 fits into 240 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 13342.875
Deduct 240 from 240 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.

Advancing to step 10:
48 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 13342.875
Subtracting 0 from 0 leaves us 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.
Put 0 as the next digit of the answer. 
Result so far: 13342.875
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.

After the division, we end up with 13342.875 and a remainder of 0.0.