863617 ÷ 43 
We want to figure out the number of times 863617 can be divided by 43.

Advancing to step 1:
The number 43 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 43

On to step 2:
When dividing 86 by 43, we get 2 with a remainder of 0.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 86 from 86 and we're left with 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 43

Step 3:
If we divide 3 by 43, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 20.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 43

Moving on to step 4:
43 goes into 36 0 times with a remainder of 36.
Record the quotient 0 as the next digit in the result. 
Result so far: 200.0
If we take 0 away from 36, we end up with 36.
Append the next digit (1) from the dividend to 36 and continue with: 361 / 43

Moving on to step 5:
43 goes into 361 8 times with a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 2008.0
If we take 344 away from 361, we end up with 17.
Bring next digit (7) of the dividend behind the 17 and repeat the process: 177 / 43

Advancing to step 6:
When dividing 177 by 43, we get 4 with a remainder of 5.
The next digit of our result is 4. 
Result so far: 20084.0
Subtract 172 from 177 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
50 divided by 43 is 1 with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 20084.1
The remainder is 7 after subtracting 43 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 8:
The number 43 fits into 70 1 times, leaving a remainder of 27.
The next digit of our result is 1. 
Result so far: 20084.11
If we subtract 43 from 70, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Our division results in 20084.11 with a remaining 0.027.