51152843 ÷ 646 
We want to divide 51152843 by 646.

On to step 1:
646 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 646

Let's proceed to step 2:
51 divided by 646 is 0 with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Fetch the next digit (1) from the dividend, attach it to 51 and continue: 511 / 646

Advancing to step 3:
If we divide 511 by 646, we get 0 and a remainder of 511.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 511, we get 511.
Append the next digit (5) from the dividend to 511 and continue with: 5115 / 646

Step 4:
646 goes into 5115 7 times with a remainder of 593.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 4522 from 5115, we get 593.
Include the next digit (2) from the dividend after 593, then repeat: 5932 / 646

Advancing to step 5:
646 goes into 5932 9 times with a remainder of 118.
Put 9 as the next digit of the answer. 
Result so far: 79.0
Deduct 5814 from 5932 and we're left with 118.
Fetch the next digit (8) from the dividend, attach it to 118 and continue: 1188 / 646

Going ahead to step 6:
646 can be fit into 1188 1 times, resulting in a remainder of 542.
The next digit of our result is 1. 
Result so far: 791.0
Subtract 646 from 1188 to get 542.
Bring next digit (4) of the dividend behind the 542 and repeat the process: 5424 / 646

Step 7:
The number 646 fits into 5424 8 times, leaving a remainder of 256.
Use 8 as the next digit of our solution. 
Result so far: 7918.0
Subtracting 5168 from 5424 leaves us with 256.
Take the next digit (3) from the dividend and append it to 256, then repeat: 2563 / 646

Let's proceed to step 8:
2563 divided by 646 is 3 with a remainder of 625.
Record the quotient 3 as the next digit in the result. 
Result so far: 79183.0
Subtracting 1938 from 2563 leaves us with 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

Moving on to step 9:
If we divide 6250 by 646, we get 9 and a remainder of 436.
Write down 9 as next digit of the result. 
Result so far: 79183.9
The remainder is 436 after subtracting 5814 from 6250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Step 10:
When dividing 4360 by 646, we get 6 with a remainder of 484.
The number 6 becomes the next digit in our result. 
Result so far: 79183.96
Subtracting 3876 from 4360 leaves us with 484.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4840, and continue the process.

Let's proceed to step 11:
If we divide 4840 by 646, we get 7 and a remainder of 318.
Record the quotient 7 as the next digit in the result. 
Result so far: 79183.967
The remainder is 318 after subtracting 4522 from 4840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Let's proceed to step 12:
646 goes into 3180 4 times with a remainder of 596.
Record the quotient 4 as the next digit in the result. 
Result so far: 79183.9674
Subtracting 2584 from 3180 leaves us with 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Moving on to step 13:
When dividing 5960 by 646, we get 9 with a remainder of 146.
The next digit of our result is 9. 
Result so far: 79183.96749
The remainder is 146 after subtracting 5814 from 5960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Advancing to step 14:
The number 646 fits into 1460 2 times, leaving a remainder of 168.
Use 2 as the next digit of our solution. 
Result so far: 79183.967492
If we subtract 1292 from 1460, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Going ahead to step 15:
If we divide 1680 by 646, we get 2 and a remainder of 388.
The number 2 becomes the next digit in our result. 
Result so far: 79183.9674922
The remainder is 388 after subtracting 1292 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

In conclusion, the division gives 79183.9674922 with a balance of 3.88e-06.