We're dividing 86543819 by 623 
Our goal is to divide 86543819 by 623.

Step 1:
When dividing 8 by 623, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 623

Step 2:
If we divide 86 by 623, we get 0 and a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Fetch the next digit (5) from the dividend, attach it to 86 and continue: 865 / 623

Advancing to step 3:
865 divided by 623 is 1 with a remainder of 242.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 623 from 865 leaves us with 242.
Append the next digit (4) from the dividend to 242 and continue with: 2424 / 623

Step 4:
When dividing 2424 by 623, we get 3 with a remainder of 555.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Deduct 1869 from 2424 and we're left with 555.
Bring next digit (3) of the dividend behind the 555 and repeat the process: 5553 / 623

Moving on to step 5:
When dividing 5553 by 623, we get 8 with a remainder of 569.
Record the quotient 8 as the next digit in the result. 
Result so far: 138.0
If we take 4984 away from 5553, we end up with 569.
Grab the next digit (8) from the dividend, add it to 569, then carry on: 5698 / 623

Let's proceed to step 6:
If we divide 5698 by 623, we get 9 and a remainder of 91.
The next digit of our result is 9. 
Result so far: 1389.0
The remainder is 91 after subtracting 5607 from 5698.
Fetch the next digit (1) from the dividend, attach it to 91 and continue: 911 / 623

Let's proceed to step 7:
If we divide 911 by 623, we get 1 and a remainder of 288.
Put 1 as the next digit of the answer. 
Result so far: 13891.0
If we take 623 away from 911, we end up with 288.
Grab the next digit (9) from the dividend, add it to 288, then carry on: 2889 / 623

Step 8:
If we divide 2889 by 623, we get 4 and a remainder of 397.
Write down 4 as next digit of the result. 
Result so far: 138914.0
Subtract 2492 from 2889 to get 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

Moving on to step 9:
If we divide 3970 by 623, we get 6 and a remainder of 232.
Put 6 as the next digit of the answer. 
Result so far: 138914.6
Deduct 3738 from 3970 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

On to step 10:
The number 623 fits into 2320 3 times, leaving a remainder of 451.
The number 3 becomes the next digit in our result. 
Result so far: 138914.63
Deduct 1869 from 2320 and we're left with 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4510, and continue the process.

Moving on to step 11:
4510 divided by 623 is 7 with a remainder of 149.
Put 7 as the next digit of the answer. 
Result so far: 138914.637
If we take 4361 away from 4510, we end up with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Let's proceed to step 12:
623 can be fit into 1490 2 times, resulting in a remainder of 244.
Use 2 as the next digit of our solution. 
Result so far: 138914.6372
If we take 1246 away from 1490, we end up with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Going ahead to step 13:
The number 623 fits into 2440 3 times, leaving a remainder of 571.
Record the quotient 3 as the next digit in the result. 
Result so far: 138914.63723
Subtracting 1869 from 2440 leaves us with 571.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5710, and continue the process.

Going ahead to step 14:
The number 623 fits into 5710 9 times, leaving a remainder of 103.
Put 9 as the next digit of the answer. 
Result so far: 138914.637239
The remainder is 103 after subtracting 5607 from 5710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Going ahead to step 15:
When dividing 1030 by 623, we get 1 with a remainder of 407.
The number 1 becomes the next digit in our result. 
Result so far: 138914.6372391
Subtracting 623 from 1030 leaves us with 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

Step 16:
4070 divided by 623 is 6 with a remainder of 332.
Use 6 as the next digit of our solution. 
Result so far: 138914.63723916
If we subtract 3738 from 4070, we get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

The final outcome is 138914.63723916, with a leftover of 3.32e-07.