Let's divide 509210 by 45
We want to figure out the number of times 509210 can be divided by 45.

Moving on to step 1:
45 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 45

Advancing to step 2:
50 divided by 45 is 1 with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 45 from 50 to get 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 45

On to step 3:
When dividing 59 by 45, we get 1 with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we take 45 away from 59, we end up with 14.
Append the next digit (2) from the dividend to 14 and continue with: 142 / 45

Step 4:
142 divided by 45 is 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 113.0
If we subtract 135 from 142, we get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 45

Moving on to step 5:
71 divided by 45 is 1 with a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 1131.0
Subtracting 45 from 71 leaves us with 26.
Grab the next digit (0) from the dividend, add it to 26, then carry on: 260 / 45

Going ahead to step 6:
When dividing 260 by 45, we get 5 with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 11315.0
Subtracting 225 from 260 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 7:
If we divide 350 by 45, we get 7 and a remainder of 35.
Write down 7 as next digit of the result. 
Result so far: 11315.7
Subtract 315 from 350 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 8:
45 goes into 350 7 times with a remainder of 35.
Put 7 as the next digit of the answer. 
Result so far: 11315.77
If we take 315 away from 350, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final result is 11315.77 with a remainder of 0.035.