863547 ÷ 43 
We want to figure out the number of times 863547 can be divided by 43.

Step 1:
43 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 43

Going ahead to step 2:
43 goes into 86 2 times with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 86 from 86 to get 0.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 43

Moving on to step 3:
When dividing 3 by 43, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 43

Step 4:
The number 43 fits into 35 0 times, leaving a remainder of 35.
The next digit of our result is 0. 
Result so far: 200.0
If we subtract 0 from 35, we get 35.
Append the next digit (4) from the dividend to 35 and continue with: 354 / 43

On to step 5:
43 can be fit into 354 8 times, resulting in a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 2008.0
Deduct 344 from 354 and we're left with 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 43

Step 6:
43 can be fit into 107 2 times, resulting in a remainder of 21.
Use 2 as the next digit of our solution. 
Result so far: 20082.0
Subtract 86 from 107 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 7:
43 can be fit into 210 4 times, resulting in a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 20082.4
Deduct 172 from 210 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 8:
43 goes into 380 8 times with a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 20082.48
If we take 344 away from 380, we end up with 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 9:
The number 43 fits into 360 8 times, leaving a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 20082.488
If we take 344 away from 360, we end up 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.

After the division, we end up with 20082.488 and a remainder of 0.0016.