We look at the division of 51742077 by 423 
Our goal is to divide 51742077 by 423.

Let's proceed to step 1:
When dividing 5 by 423, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 423

Going ahead to step 2:
When dividing 51 by 423, we get 0 with a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Bring next digit (7) of the dividend behind the 51 and repeat the process: 517 / 423

On to step 3:
If we divide 517 by 423, we get 1 and a remainder of 94.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 423 from 517 leaves us with 94.
Append the next digit (4) from the dividend to 94 and continue with: 944 / 423

Step 4:
423 goes into 944 2 times with a remainder of 98.
The next digit of our result is 2. 
Result so far: 12.0
If we take 846 away from 944, we end up with 98.
Take the next digit (2) from the dividend and append it to 98, then repeat: 982 / 423

Let's proceed to step 5:
If we divide 982 by 423, we get 2 and a remainder of 136.
The number 2 becomes the next digit in our result. 
Result so far: 122.0
Deduct 846 from 982 and we're left with 136.
Fetch the next digit (0) from the dividend, attach it to 136 and continue: 1360 / 423

Advancing to step 6:
423 can be fit into 1360 3 times, resulting in a remainder of 91.
Use 3 as the next digit of our solution. 
Result so far: 1223.0
If we take 1269 away from 1360, we end up with 91.
Fetch the next digit (7) from the dividend, attach it to 91 and continue: 917 / 423

Advancing to step 7:
917 divided by 423 is 2 with a remainder of 71.
The next digit of our result is 2. 
Result so far: 12232.0
Subtract 846 from 917 to get 71.
Bring next digit (7) of the dividend behind the 71 and repeat the process: 717 / 423

Moving on to step 8:
If we divide 717 by 423, we get 1 and a remainder of 294.
The number 1 becomes the next digit in our result. 
Result so far: 122321.0
Deduct 423 from 717 and we're left with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Advancing to step 9:
When dividing 2940 by 423, we get 6 with a remainder of 402.
The next digit of our result is 6. 
Result so far: 122321.6
The remainder is 402 after subtracting 2538 from 2940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Let's proceed to step 10:
423 can be fit into 4020 9 times, resulting in a remainder of 213.
Put 9 as the next digit of the answer. 
Result so far: 122321.69
If we take 3807 away from 4020, we end up with 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Advancing to step 11:
2130 divided by 423 is 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 122321.695
Subtracting 2115 from 2130 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 12:
150 divided by 423 is 0 with a remainder of 150.
Use 0 as the next digit of our solution. 
Result so far: 122321.695
Deduct 0 from 150 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 13:
423 can be fit into 1500 3 times, resulting in a remainder of 231.
Write down 3 as next digit of the result. 
Result so far: 122321.69503
Deduct 1269 from 1500 and we're left with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Let's proceed to step 14:
423 can be fit into 2310 5 times, resulting in a remainder of 195.
Write down 5 as next digit of the result. 
Result so far: 122321.695035
The remainder is 195 after subtracting 2115 from 2310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Going ahead to step 15:
423 can be fit into 1950 4 times, resulting in a remainder of 258.
Record the quotient 4 as the next digit in the result. 
Result so far: 122321.6950354
Deduct 1692 from 1950 and we're left with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Moving on to step 16:
If we divide 2580 by 423, we get 6 and a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 122321.69503546
If we subtract 2538 from 2580, 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 result is 122321.69503546 with a remainder of 4.2e-08.