We divide 642819 by 51
Our goal is to divide 642819 by 51.

On to step 1:
51 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 51

Let's proceed to step 2:
51 goes into 64 1 times with a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 51 from 64, we get 13.
Bring next digit (2) of the dividend behind the 13 and repeat the process: 132 / 51

On to step 3:
If we divide 132 by 51, we get 2 and a remainder of 30.
Put 2 as the next digit of the answer. 
Result so far: 12.0
The remainder is 30 after subtracting 102 from 132.
Bring next digit (8) of the dividend behind the 30 and repeat the process: 308 / 51

Moving on to step 4:
308 divided by 51 is 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 126.0
Deduct 306 from 308 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 51

Advancing to step 5:
If we divide 21 by 51, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 1260.0
Subtract 0 from 21 to get 21.
Bring next digit (9) of the dividend behind the 21 and repeat the process: 219 / 51

Moving on to step 6:
When dividing 219 by 51, we get 4 with a remainder of 15.
The next digit of our result is 4. 
Result so far: 12604.0
If we subtract 204 from 219, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
150 divided by 51 is 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 12604.2
If we take 102 away from 150, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 8:
480 divided by 51 is 9 with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 12604.29
Subtracting 459 from 480 leaves us 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.

Going ahead to step 9:
210 divided by 51 is 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 12604.294
Deduct 204 from 210 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 10:
If we divide 60 by 51, we get 1 and a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 12604.2941
If we subtract 51 from 60, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 11:
If we divide 90 by 51, we get 1 and a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 12604.29411
If we take 51 away from 90, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final outcome is 12604.29411, with a leftover of 3.9e-05.