We look at the division of 850258 by 43 
We want to divide 850258 by 43.

On to step 1:
43 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 43

Moving on to step 2:
If we divide 85 by 43, we get 1 and a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 42 after subtracting 43 from 85.
Grab the next digit (0) from the dividend, add it to 42, then carry on: 420 / 43

Moving on to step 3:
420 divided by 43 is 9 with a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Deduct 387 from 420 and we're left with 33.
Fetch the next digit (2) from the dividend, attach it to 33 and continue: 332 / 43

Let's proceed to step 4:
If we divide 332 by 43, we get 7 and a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 197.0
If we subtract 301 from 332, we get 31.
Include the next digit (5) from the dividend after 31, then repeat: 315 / 43

Advancing to step 5:
The number 43 fits into 315 7 times, leaving a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 1977.0
Deduct 301 from 315 and we're left with 14.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 43

Going ahead to step 6:
The number 43 fits into 148 3 times, leaving a remainder of 19.
Put 3 as the next digit of the answer. 
Result so far: 19773.0
If we take 129 away from 148, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
When dividing 190 by 43, we get 4 with a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 19773.4
Deduct 172 from 190 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
43 goes into 180 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 19773.44
Subtracting 172 from 180 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 19773.44 and a remainder of 0.008.