We look at the division of 51357 by 66 
We want to divide 51357 by 66.

Let's proceed to step 1:
If we divide 5 by 66, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 66

Advancing to step 2:
66 goes into 51 0 times with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Append the next digit (3) from the dividend to 51 and continue with: 513 / 66

Step 3:
66 can be fit into 513 7 times, resulting in a remainder of 51.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 462 from 513 leaves us with 51.
Append the next digit (5) from the dividend to 51 and continue with: 515 / 66

Going ahead to step 4:
66 can be fit into 515 7 times, resulting in a remainder of 53.
Write down 7 as next digit of the result. 
Result so far: 77.0
The remainder is 53 after subtracting 462 from 515.
Append the next digit (7) from the dividend to 53 and continue with: 537 / 66

On to step 5:
66 goes into 537 8 times with a remainder of 9.
The next digit of our result is 8. 
Result so far: 778.0
Subtracting 528 from 537 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 6:
66 goes into 90 1 times with a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 778.1
Subtract 66 from 90 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 7:
66 goes into 240 3 times with a remainder of 42.
The next digit of our result is 3. 
Result so far: 778.13
If we subtract 198 from 240, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 8:
If we divide 420 by 66, we get 6 and a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 778.136
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 9:
When dividing 240 by 66, we get 3 with a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 778.1363
If we subtract 198 from 240, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 10:
When dividing 420 by 66, we get 6 with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 778.13636
If we take 396 away from 420, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 11:
When dividing 240 by 66, we get 3 with a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 778.136363
Subtracting 198 from 240 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 12:
If we divide 420 by 66, we get 6 and a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 778.1363636
If we subtract 396 from 420, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 13:
66 can be fit into 240 3 times, resulting in a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 778.13636363
If we subtract 198 from 240, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final outcome is 778.13636363, with a leftover of 4.2e-08.