We look at the division of 81394563 by 423 
We're looking to find how many times 423 goes into 81394563.

Let's proceed to step 1:
423 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 423

Advancing to step 2:
423 can be fit into 81 0 times, resulting in a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Grab the next digit (3) from the dividend, add it to 81, then carry on: 813 / 423

Step 3:
423 can be fit into 813 1 times, resulting in a remainder of 390.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 423 from 813 and we're left with 390.
Grab the next digit (9) from the dividend, add it to 390, then carry on: 3909 / 423

Let's proceed to step 4:
3909 divided by 423 is 9 with a remainder of 102.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Subtracting 3807 from 3909 leaves us with 102.
Fetch the next digit (4) from the dividend, attach it to 102 and continue: 1024 / 423

Let's proceed to step 5:
1024 divided by 423 is 2 with a remainder of 178.
The next digit of our result is 2. 
Result so far: 192.0
Deduct 846 from 1024 and we're left with 178.
Bring next digit (5) of the dividend behind the 178 and repeat the process: 1785 / 423

On to step 6:
If we divide 1785 by 423, we get 4 and a remainder of 93.
Put 4 as the next digit of the answer. 
Result so far: 1924.0
Deduct 1692 from 1785 and we're left with 93.
Append the next digit (6) from the dividend to 93 and continue with: 936 / 423

Advancing to step 7:
423 can be fit into 936 2 times, resulting in a remainder of 90.
Write down 2 as next digit of the result. 
Result so far: 19242.0
Subtracting 846 from 936 leaves us with 90.
Bring next digit (3) of the dividend behind the 90 and repeat the process: 903 / 423

Going ahead to step 8:
903 divided by 423 is 2 with a remainder of 57.
Write down 2 as next digit of the result. 
Result so far: 192422.0
The remainder is 57 after subtracting 846 from 903.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 9:
570 divided by 423 is 1 with a remainder of 147.
The number 1 becomes the next digit in our result. 
Result so far: 192422.1
Subtracting 423 from 570 leaves us with 147.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1470, and continue the process.

On to step 10:
423 goes into 1470 3 times with a remainder of 201.
Record the quotient 3 as the next digit in the result. 
Result so far: 192422.13
Subtract 1269 from 1470 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.

Moving on to step 11:
423 goes into 2010 4 times with a remainder of 318.
Put 4 as the next digit of the answer. 
Result so far: 192422.134
Subtract 1692 from 2010 to get 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Going ahead to step 12:
423 can be fit into 3180 7 times, resulting in a remainder of 219.
The number 7 becomes the next digit in our result. 
Result so far: 192422.1347
If we subtract 2961 from 3180, we get 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Step 13:
423 can be fit into 2190 5 times, resulting in a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 192422.13475
The remainder is 75 after subtracting 2115 from 2190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 14:
If we divide 750 by 423, we get 1 and a remainder of 327.
Use 1 as the next digit of our solution. 
Result so far: 192422.134751
The remainder is 327 after subtracting 423 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Step 15:
If we divide 3270 by 423, we get 7 and a remainder of 309.
Write down 7 as next digit of the result. 
Result so far: 192422.1347517
If we subtract 2961 from 3270, we get 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Let's proceed to step 16:
When dividing 3090 by 423, we get 7 with a remainder of 129.
The number 7 becomes the next digit in our result. 
Result so far: 192422.13475177
Subtracting 2961 from 3090 leaves us with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

The final outcome is 192422.13475177, with a leftover of 1.29e-07.