806289 ÷ 45 
Our goal is to divide 806289 by 45.

Going ahead to step 1:
8 divided by 45 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 45

Advancing to step 2:
45 goes into 80 1 times with a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 45 away from 80, we end up with 35.
Bring next digit (6) of the dividend behind the 35 and repeat the process: 356 / 45

Step 3:
The number 45 fits into 356 7 times, leaving a remainder of 41.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtracting 315 from 356 leaves us with 41.
Fetch the next digit (2) from the dividend, attach it to 41 and continue: 412 / 45

On to step 4:
When dividing 412 by 45, we get 9 with a remainder of 7.
The next digit of our result is 9. 
Result so far: 179.0
Deduct 405 from 412 and we're left with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 45

Going ahead to step 5:
The number 45 fits into 78 1 times, leaving a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1791.0
If we take 45 away from 78, we end up with 33.
Take the next digit (9) from the dividend and append it to 33, then repeat: 339 / 45

On to step 6:
The number 45 fits into 339 7 times, leaving a remainder of 24.
Record the quotient 7 as the next digit in the result. 
Result so far: 17917.0
If we subtract 315 from 339, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
When dividing 240 by 45, we get 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 17917.5
Subtracting 225 from 240 leaves us 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.

Moving on to step 8:
When dividing 150 by 45, we get 3 with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 17917.53
Subtracting 135 from 150 leaves us 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 9:
150 divided by 45 is 3 with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 17917.533
Deduct 135 from 150 and we're left 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.

Our division results in 17917.533 with a remaining 0.0015.