We look at the division of 863790 by 43 
We want to divide 863790 by 43.

On to step 1:
43 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 43

Advancing to step 2:
86 divided by 43 is 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 86 from 86 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 43

Advancing to step 3:
When dividing 3 by 43, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 43

Advancing to step 4:
43 goes into 37 0 times with a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 200.0
If we subtract 0 from 37, we get 37.
Append the next digit (9) from the dividend to 37 and continue with: 379 / 43

Let's proceed to step 5:
379 divided by 43 is 8 with a remainder of 35.
Put 8 as the next digit of the answer. 
Result so far: 2008.0
Deduct 344 from 379 and we're left with 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 43

Let's proceed to step 6:
If we divide 350 by 43, we get 8 and a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 20088.0
Deduct 344 from 350 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
If we divide 60 by 43, we get 1 and a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 20088.1
The remainder is 17 after subtracting 43 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 8:
If we divide 170 by 43, we get 3 and a remainder of 41.
Use 3 as the next digit of our solution. 
Result so far: 20088.13
The remainder is 41 after subtracting 129 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 9:
When dividing 410 by 43, we get 9 with a remainder of 23.
The number 9 becomes the next digit in our result. 
Result so far: 20088.139
If we subtract 387 from 410, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 10:
When dividing 230 by 43, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 20088.1395
If we take 215 away from 230, we end up 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 11:
43 can be fit into 150 3 times, resulting in a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 20088.13953
If we take 129 away from 150, 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.

Going ahead to step 12:
210 divided by 43 is 4 with a remainder of 38.
Put 4 as the next digit of the answer. 
Result so far: 20088.139534
If we subtract 172 from 210, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 13:
The number 43 fits into 380 8 times, leaving a remainder of 36.
The number 8 becomes the next digit in our result. 
Result so far: 20088.1395348
If we subtract 344 from 380, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 14:
If we divide 360 by 43, we get 8 and a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 20088.13953488
Subtracting 344 from 360 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final result is 20088.13953488 with a remainder of 1.6e-08.