We look at the division of 51106398 by 231 
Let's see how many times 231 fits into 51106398.

Advancing to step 1:
If we divide 5 by 231, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 231

Advancing to step 2:
The number 231 fits into 51 0 times, leaving a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Fetch the next digit (1) from the dividend, attach it to 51 and continue: 511 / 231

On to step 3:
511 divided by 231 is 2 with a remainder of 49.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 462 from 511, we get 49.
Bring next digit (0) of the dividend behind the 49 and repeat the process: 490 / 231

On to step 4:
If we divide 490 by 231, we get 2 and a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 22.0
The remainder is 28 after subtracting 462 from 490.
Append the next digit (6) from the dividend to 28 and continue with: 286 / 231

Moving on to step 5:
286 divided by 231 is 1 with a remainder of 55.
Write down 1 as next digit of the result. 
Result so far: 221.0
Deduct 231 from 286 and we're left with 55.
Append the next digit (3) from the dividend to 55 and continue with: 553 / 231

Step 6:
When dividing 553 by 231, we get 2 with a remainder of 91.
Record the quotient 2 as the next digit in the result. 
Result so far: 2212.0
Subtract 462 from 553 to get 91.
Take the next digit (9) from the dividend and append it to 91, then repeat: 919 / 231

Let's proceed to step 7:
231 can be fit into 919 3 times, resulting in a remainder of 226.
Put 3 as the next digit of the answer. 
Result so far: 22123.0
Subtract 693 from 919 to get 226.
Bring next digit (8) of the dividend behind the 226 and repeat the process: 2268 / 231

Let's proceed to step 8:
231 goes into 2268 9 times with a remainder of 189.
Write down 9 as next digit of the result. 
Result so far: 221239.0
If we subtract 2079 from 2268, we get 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Let's proceed to step 9:
When dividing 1890 by 231, we get 8 with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 221239.8
If we subtract 1848 from 1890, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 10:
231 can be fit into 420 1 times, resulting in a remainder of 189.
Write down 1 as next digit of the result. 
Result so far: 221239.81
If we take 231 away from 420, we end up with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

On to step 11:
When dividing 1890 by 231, we get 8 with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 221239.818
The remainder is 42 after subtracting 1848 from 1890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 12:
231 can be fit into 420 1 times, resulting in a remainder of 189.
Write down 1 as next digit of the result. 
Result so far: 221239.8181
Subtract 231 from 420 to get 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Going ahead to step 13:
The number 231 fits into 1890 8 times, leaving a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 221239.81818
Subtracting 1848 from 1890 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 14:
231 can be fit into 420 1 times, resulting in a remainder of 189.
Write down 1 as next digit of the result. 
Result so far: 221239.818181
The remainder is 189 after subtracting 231 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Advancing to step 15:
When dividing 1890 by 231, we get 8 with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 221239.8181818
Subtract 1848 from 1890 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 16:
If we divide 420 by 231, we get 1 and a remainder of 189.
Use 1 as the next digit of our solution. 
Result so far: 221239.81818181
The remainder is 189 after subtracting 231 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

The final result is 221239.81818181 with a remainder of 1.89e-07.