We look at the division of 561551 by 45 
We're looking to find how many times 45 goes into 561551.

On to step 1:
If we divide 5 by 45, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 45

Step 2:
56 divided by 45 is 1 with a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 45 from 56 leaves us with 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 45

Let's proceed to step 3:
111 divided by 45 is 2 with a remainder of 21.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 90 away from 111, we end up with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 45

On to step 4:
The number 45 fits into 215 4 times, leaving a remainder of 35.
Use 4 as the next digit of our solution. 
Result so far: 124.0
The remainder is 35 after subtracting 180 from 215.
Grab the next digit (5) from the dividend, add it to 35, then carry on: 355 / 45

On to step 5:
355 divided by 45 is 7 with a remainder of 40.
Put 7 as the next digit of the answer. 
Result so far: 1247.0
The remainder is 40 after subtracting 315 from 355.
Bring next digit (1) of the dividend behind the 40 and repeat the process: 401 / 45

Let's proceed to step 6:
If we divide 401 by 45, we get 8 and a remainder of 41.
Use 8 as the next digit of our solution. 
Result so far: 12478.0
If we take 360 away from 401, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 7:
The number 45 fits into 410 9 times, leaving a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 12478.9
If we subtract 405 from 410, we 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.

Step 8:
50 divided by 45 is 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 12478.91
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.

Moving on to step 9:
45 can be fit into 50 1 times, resulting in a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 12478.911
Deduct 45 from 50 and we're left 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.

Our division results in 12478.911 with a remaining 0.0005.