551270 ÷ 45 
We want to figure out the number of times 551270 can be divided by 45.

Moving on to step 1:
5 divided by 45 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 45

Moving on to step 2:
55 divided by 45 is 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 10 after subtracting 45 from 55.
Append the next digit (1) from the dividend to 10 and continue with: 101 / 45

Moving on to step 3:
45 can be fit into 101 2 times, resulting in a remainder of 11.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 90 away from 101, we end up with 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 45

Step 4:
45 can be fit into 112 2 times, resulting in a remainder of 22.
The next digit of our result is 2. 
Result so far: 122.0
If we take 90 away from 112, we end up with 22.
Fetch the next digit (7) from the dividend, attach it to 22 and continue: 227 / 45

Step 5:
227 divided by 45 is 5 with a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 1225.0
If we subtract 225 from 227, we get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 45

Moving on to step 6:
If we divide 20 by 45, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 12250.0
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 7:
The number 45 fits into 200 4 times, leaving a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 12250.4
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
When dividing 200 by 45, we get 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 12250.44
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 12250.44 and a remainder of 0.02.