We look at the division of 51705450 by 393 
Let's see how many times 393 fits into 51705450.

Advancing to step 1:
393 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
The remainder is 5 after subtracting 0 from 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 393

Moving on to step 2:
If we divide 51 by 393, we get 0 and a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Append the next digit (7) from the dividend to 51 and continue with: 517 / 393

Advancing to step 3:
393 can be fit into 517 1 times, resulting in a remainder of 124.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 393 from 517 leaves us with 124.
Grab the next digit (0) from the dividend, add it to 124, then carry on: 1240 / 393

Advancing to step 4:
393 can be fit into 1240 3 times, resulting in a remainder of 61.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtract 1179 from 1240 to get 61.
Append the next digit (5) from the dividend to 61 and continue with: 615 / 393

Going ahead to step 5:
393 goes into 615 1 times with a remainder of 222.
Record the quotient 1 as the next digit in the result. 
Result so far: 131.0
Deduct 393 from 615 and we're left with 222.
Append the next digit (4) from the dividend to 222 and continue with: 2224 / 393

Going ahead to step 6:
When dividing 2224 by 393, we get 5 with a remainder of 259.
Put 5 as the next digit of the answer. 
Result so far: 1315.0
Subtracting 1965 from 2224 leaves us with 259.
Include the next digit (5) from the dividend after 259, then repeat: 2595 / 393

Step 7:
393 can be fit into 2595 6 times, resulting in a remainder of 237.
The next digit of our result is 6. 
Result so far: 13156.0
Subtract 2358 from 2595 to get 237.
Grab the next digit (0) from the dividend, add it to 237, then carry on: 2370 / 393

Going ahead to step 8:
2370 divided by 393 is 6 with a remainder of 12.
The next digit of our result is 6. 
Result so far: 131566.0
Subtract 2358 from 2370 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
The number 393 fits into 120 0 times, leaving a remainder of 120.
Put 0 as the next digit of the answer. 
Result so far: 131566.0
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 10:
393 goes into 1200 3 times with a remainder of 21.
Use 3 as the next digit of our solution. 
Result so far: 131566.03
If we take 1179 away from 1200, we end up 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.

On to step 11:
When dividing 210 by 393, we get 0 with a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 131566.03
Subtract 0 from 210 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 12:
The number 393 fits into 2100 5 times, leaving a remainder of 135.
The number 5 becomes the next digit in our result. 
Result so far: 131566.0305
Subtracting 1965 from 2100 leaves us with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Let's proceed to step 13:
393 goes into 1350 3 times with a remainder of 171.
Put 3 as the next digit of the answer. 
Result so far: 131566.03053
Subtract 1179 from 1350 to get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Moving on to step 14:
393 goes into 1710 4 times with a remainder of 138.
The next digit of our result is 4. 
Result so far: 131566.030534
Deduct 1572 from 1710 and we're left with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

On to step 15:
393 goes into 1380 3 times with a remainder of 201.
The number 3 becomes the next digit in our result. 
Result so far: 131566.0305343
Subtract 1179 from 1380 to get 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

On to step 16:
393 goes into 2010 5 times with a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 131566.03053435
Deduct 1965 from 2010 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

The final outcome is 131566.03053435, with a leftover of 4.5e-08.