We look at the division of 851045 by 45 
We're looking to find how many times 45 goes into 851045.

Step 1:
When dividing 8 by 45, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 45

Let's proceed to step 2:
45 can be fit into 85 1 times, resulting in a remainder of 40.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 45 from 85, we get 40.
Take the next digit (1) from the dividend and append it to 40, then repeat: 401 / 45

Going ahead to step 3:
If we divide 401 by 45, we get 8 and a remainder of 41.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
If we take 360 away from 401, we end up with 41.
Bring next digit (0) of the dividend behind the 41 and repeat the process: 410 / 45

Going ahead to step 4:
The number 45 fits into 410 9 times, leaving a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 189.0
Deduct 405 from 410 and we're left with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 45

On to step 5:
If we divide 54 by 45, we get 1 and a remainder of 9.
The next digit of our result is 1. 
Result so far: 1891.0
Subtract 45 from 54 to get 9.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 45

On to step 6:
The number 45 fits into 95 2 times, leaving a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 18912.0
If we take 90 away from 95, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
45 goes into 50 1 times with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 18912.1
Subtract 45 from 50 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.

Going ahead to step 8:
If we divide 50 by 45, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 18912.11
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 18912.11 and a remainder of 0.005.