We're dividing 10506698 by 399 
We want to divide 10506698 by 399.

Step 1:
When dividing 1 by 399, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 399

Going ahead to step 2:
If we divide 10 by 399, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 10 to get 10.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 399

On to step 3:
105 divided by 399 is 0 with a remainder of 105.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 105 to get 105.
Take the next digit (0) from the dividend and append it to 105, then repeat: 1050 / 399

Step 4:
The number 399 fits into 1050 2 times, leaving a remainder of 252.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 798 from 1050, we get 252.
Grab the next digit (6) from the dividend, add it to 252, then carry on: 2526 / 399

Let's proceed to step 5:
399 can be fit into 2526 6 times, resulting in a remainder of 132.
Use 6 as the next digit of our solution. 
Result so far: 26.0
The remainder is 132 after subtracting 2394 from 2526.
Include the next digit (6) from the dividend after 132, then repeat: 1326 / 399

Going ahead to step 6:
399 can be fit into 1326 3 times, resulting in a remainder of 129.
The next digit of our result is 3. 
Result so far: 263.0
If we subtract 1197 from 1326, we get 129.
Append the next digit (9) from the dividend to 129 and continue with: 1299 / 399

Advancing to step 7:
399 can be fit into 1299 3 times, resulting in a remainder of 102.
Write down 3 as next digit of the result. 
Result so far: 2633.0
If we take 1197 away from 1299, we end up with 102.
Bring next digit (8) of the dividend behind the 102 and repeat the process: 1028 / 399

Step 8:
If we divide 1028 by 399, we get 2 and a remainder of 230.
Record the quotient 2 as the next digit in the result. 
Result so far: 26332.0
If we subtract 798 from 1028, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 9:
If we divide 2300 by 399, we get 5 and a remainder of 305.
Write down 5 as next digit of the result. 
Result so far: 26332.5
If we subtract 1995 from 2300, we get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Let's proceed to step 10:
The number 399 fits into 3050 7 times, leaving a remainder of 257.
The number 7 becomes the next digit in our result. 
Result so far: 26332.57
If we take 2793 away from 3050, we end up with 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Going ahead to step 11:
The number 399 fits into 2570 6 times, leaving a remainder of 176.
Use 6 as the next digit of our solution. 
Result so far: 26332.576
Deduct 2394 from 2570 and we're left with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 12:
If we divide 1760 by 399, we get 4 and a remainder of 164.
Put 4 as the next digit of the answer. 
Result so far: 26332.5764
The remainder is 164 after subtracting 1596 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 13:
The number 399 fits into 1640 4 times, leaving a remainder of 44.
Put 4 as the next digit of the answer. 
Result so far: 26332.57644
Subtract 1596 from 1640 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 26332.57644, with a leftover of 4.4e-05.