We look at the division of 52728907 by 210 
We want to divide 52728907 by 210.

On to step 1:
210 goes into 5 0 times 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.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 210

Going ahead to step 2:
The number 210 fits into 52 0 times, leaving a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 52, we end up with 52.
Append the next digit (7) from the dividend to 52 and continue with: 527 / 210

Going ahead to step 3:
When dividing 527 by 210, we get 2 with a remainder of 107.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 420 from 527 leaves us with 107.
Bring next digit (2) of the dividend behind the 107 and repeat the process: 1072 / 210

Moving on to step 4:
210 goes into 1072 5 times with a remainder of 22.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
Subtracting 1050 from 1072 leaves us with 22.
Grab the next digit (8) from the dividend, add it to 22, then carry on: 228 / 210

Step 5:
If we divide 228 by 210, we get 1 and a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 251.0
If we take 210 away from 228, we end up with 18.
Grab the next digit (9) from the dividend, add it to 18, then carry on: 189 / 210

Step 6:
189 divided by 210 is 0 with a remainder of 189.
Use 0 as the next digit of our solution. 
Result so far: 2510.0
The remainder is 189 after subtracting 0 from 189.
Fetch the next digit (0) from the dividend, attach it to 189 and continue: 1890 / 210

Advancing to step 7:
When dividing 1890 by 210, we get 9 with a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 25109.0
If we subtract 1890 from 1890, we get 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 210

Step 8:
210 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 251090.0
The remainder is 7 after subtracting 0 from 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 9:
If we divide 70 by 210, we get 0 and a remainder of 70.
The next digit of our result is 0. 
Result so far: 251090.0
Deduct 0 from 70 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 10:
210 goes into 700 3 times with a remainder of 70.
Put 3 as the next digit of the answer. 
Result so far: 251090.03
Subtracting 630 from 700 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 11:
The number 210 fits into 700 3 times, leaving a remainder of 70.
Use 3 as the next digit of our solution. 
Result so far: 251090.033
If we subtract 630 from 700, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Our division results in 251090.033 with a remaining 0.007.