Let's divide 51039291 by 209
Our goal is to divide 51039291 by 209.

Moving on to step 1:
209 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.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 209

Going ahead to step 2:
51 divided by 209 is 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Append the next digit (0) from the dividend to 51 and continue with: 510 / 209

Going ahead to step 3:
The number 209 fits into 510 2 times, leaving a remainder of 92.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 418 away from 510, we end up with 92.
Append the next digit (3) from the dividend to 92 and continue with: 923 / 209

Step 4:
209 can be fit into 923 4 times, resulting in a remainder of 87.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
If we take 836 away from 923, we end up with 87.
Include the next digit (9) from the dividend after 87, then repeat: 879 / 209

Let's proceed to step 5:
If we divide 879 by 209, we get 4 and a remainder of 43.
The number 4 becomes the next digit in our result. 
Result so far: 244.0
Subtract 836 from 879 to get 43.
Grab the next digit (2) from the dividend, add it to 43, then carry on: 432 / 209

Going ahead to step 6:
209 goes into 432 2 times with a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 2442.0
If we subtract 418 from 432, we get 14.
Fetch the next digit (9) from the dividend, attach it to 14 and continue: 149 / 209

On to step 7:
The number 209 fits into 149 0 times, leaving a remainder of 149.
The next digit of our result is 0. 
Result so far: 24420.0
Subtracting 0 from 149 leaves us with 149.
Grab the next digit (1) from the dividend, add it to 149, then carry on: 1491 / 209

Step 8:
The number 209 fits into 1491 7 times, leaving a remainder of 28.
The next digit of our result is 7. 
Result so far: 244207.0
If we take 1463 away from 1491, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 9:
209 can be fit into 280 1 times, resulting in a remainder of 71.
Record the quotient 1 as the next digit in the result. 
Result so far: 244207.1
If we subtract 209 from 280, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 10:
The number 209 fits into 710 3 times, leaving a remainder of 83.
The number 3 becomes the next digit in our result. 
Result so far: 244207.13
If we subtract 627 from 710, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 11:
209 goes into 830 3 times with a remainder of 203.
Write down 3 as next digit of the result. 
Result so far: 244207.133
The remainder is 203 after subtracting 627 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Our division results in 244207.133 with a remaining 0.0203.